 Hello everyone after a long time we are having a centaur so you have to put yourself on mute so please mention your name yeah so people who will not be having name proper name will have to bar them from the quiz so hence if you have got a name by default just go out login once again refresh put your proper name there so anyone who is not having a name will be thrown out so that's that's something which is the rule okay so quickly join the session now today we have 15 questions in all and there will be some modification in terms of earlier used to do lma last marks analysis separately now lma is inbuilt in centaur itself okay so you will you will have a full report of your performance at the end of the day and that those performances will be recorded over a period of time so you can use that data for your improvement okay so you know the type of errors we have been segregating so you have to have that list with you anyways you will see that list in the slide is my audio proper are you able to hear me properly any disturbance okay so we have 39 so we I can see 53 participants have joined in so those who are attending for the first time you have you have to go to menti.com on a separate browser or primarily browser only so go there and put the code 37970837 and then you have to put your name over there to participate in the quiz so anyone has anyone is facing any difficulty joining the quiz we'll start sharp at 8.03 so all of you must join by that time so I can see there are 54 participants let me see who all are there so there are 54 now 56 so let those so can you wait just a second I'm going to join now yeah I am waiting waiting couple of more minutes I will be giving you so join all of you should join yep so I can see 45 people have code is 37970837 it's there on the screen 37970837 today we will be going through our ninth grade topics only so and but then they were willing to your NTS exam so since we have not covered anything so far in grade 10 stuff so okay so 37970837 so the format of the quiz is very simple there are 15 questions in all all our MCQs now there is only one correct answer you will be getting 90 seconds each for solving the question so in NTSC the time limit is only 72 seconds actually for one particular question but here we are giving you 90 seconds is a warm up warming up quiz so hence 90 seconds per question then only one correct answer there is no negative marking but those who answer first get more point okay so fastest finger first is also there after every question we will be solving the question and then we will be also doing something called lost analysis so all of you must know what kind of errors you are doing and that is going to be captured and I request everybody to put your mic on mute so that there is no disturbance and I would appreciate if there is no discussion during the question is live that means for those 90 seconds I will also be silent you guys also be silent and no chat chatting in the chat box okay fair enough shall we start all of your comfortable so get your pen and paper and we are starting now here is the first question guys on your screen and you will be getting 90 seconds for each one of them okay so here is the first questions responses oh my god so you are you have lost your knowledge of grade 9 so yes let's explain it okay so first of all this is the leaderboard so Nishant has got the highest point who's Ronald magical Rhino you have to identify right okay Ronald Trump who is Ronald anyways from a chili by Siddhartha okay so before that let me explain this question why did you get it wrong so clearly this 3125 here is what is this 3125 so all of them these are prime numbers you know that if the denominator is not a multiple of only 2 and 5 then you are going to get a non-terminating decimal representation 3125 is 5 raised to 5 I think yeah yes 5 raised to 5 so hence it's a multiple of only 5 so hence you can have in the denominator denominator must be of the form of 2 to the power m into 5 to the power m for for it to be terminating for the fraction to be for the sorry so for the fraction to be terminating right so you please remember so if you have that say 1 upon 2 it is nothing but 1 upon 2 to the power 1 into 5 to the power 0 right where m and n are integers or primarily non-negative integers now if you have 1 upon 4 it is 1 upon 2 square into 5 to the power 0 so let's say if you have 1 upon 16 it's 1 upon 2 to the power 4 into 5 to power 0 like that or if 1 upon 25 is 1 upon 2 to the power 0 into 5 to the power 2 so whenever you have all of this whenever you have in the denominator anything which has only 2 and 5 as factors then it is going to be terminating so this is the knowledge last year also we had similar such questions lots of them actually so that's the answer to this anyone needs any further explanation all clear again in this year when you are when we will be dealing with number system you'll again see this coming back okay never mind let's go to the lma now so this is a new thing which have which we have introduced what you need to do is you have to now answer this right so there will be you know options available on your screen just press one of them whichever you think is correct and submit so whether you got it by solving whether you guess guessed it whether it is guessed it wrong didn't read the question properly did not get the question wrong concept applied careless mistake calculation error couldn't complete in time so you have to just you know what all of you those who have this is for your benefit you will get the information later on and then you will be able to track your care you know or let's say errors and we will try to improve upon that okay so code is 37970837 okay please please mark your you know responses here so that you know you get a clear-cut picture where were you at the end of the day and hence we will be compiling all this data okay okay so shall we move ahead everybody has voted so this is there is no time limit here so now I will be moving ahead so I would request I'll give you 10 more seconds to register your answer or response here done so let's go to the next question okay question 2 is on your board find this value the value of 2 to the power m plus 3 into 3 to the power 2 m minus n into 5 to the power m plus n plus 3 into 6 to the power n plus 1 okay so here is the correct response 26 people have got it right so let me explain this first before going on to okay so this was easy very easy experience or you could have there are shortcuts to this as well so you could have used any which way so yeah so you can simply put you know values so that's something called shortcut method but I will go with the normal explanation normally a usual standard method of solving this so it is also not long so what you need to see here is you you have to do mentally a lot of calculation in terms of breaking down 6 and 10 and 15 so hence if you see this is 2 to the power what is what are the powers of 2 so if you see powers let's count the powers of 2 so m plus 3 then we have we will get here also 1 2 so n plus 1 then we'll have another 2 here so minus m minus 1 then another 2 from here minus n minus 3 isn't it these are the total powers of m in you know all of them so if you see this is nothing but 2 to the power 0 so 2 to the power 0 is 1 now let's check the powers of 3 3 power is 2 m minus n then what is you will get 1 3 from here as well so again plus n plus 1 1 3 again from here so you'll get but then it is denominator so the sign will change minus 1 another 3 is here so but in denominator so sign means sign will change so again you will see this is 3 power 0 and similarly for 5 also if I see 5 m plus n plus 3 m plus n plus 3 then here again there is minus n minus 3 so why minus why minus 3 because n plus 3 isn't the denominator and again 1 5 will be from here minus n so you have to simple this okay so then it is 5 to the power 0 so all are 2 to the power 0 into 3 to the power 0 into 5 to the power 0 there is no other prime factor so hence everything is 1 so correct okay so this is where this is how you can solve or typically other method is you put some values right so you yeah or you put m is equal to n that's another trick so whichever way you can do you can you have to solve it within 90 seconds so this was also asked in NTC one of the NTC papers fair enough so let's see the any any explanation needed here further any further explanation needed here so let me just go to the leaderboard here is okay so Nishant and Anuya okay close fight very good Anika Siddharth magical rhino Sanjana puja oh lots of R&R folks are there oh Anuya is first time okay let's do the analysis quickly do the element guys quick quick quick within 10 seconds submit you have to submit mark and submit quick okay so lots of people could not complete in time so that you haven't you have a speed issue here okay so we will have to work on speed fair enough no problem done all done all all mark your own your responses so we will proceed proceed to the next question and the next question is on your screen okay fantastic so lots of people have got it right very good and let me explain it very quick explanation is you have to just do LCM into HCF is equal to the two numbers so whenever you are finding you know there are two numbers a and b that will be equal to product of a two number is always equal to HCF into LCM this simple one can do the trick okay so you know the LCM 36 you know the HCF that is 2 and one number is x another number is 18 so x has to be 4 correct so this was the learning of this question learning of the question is HCF and LCM product of two numbers is the product of the numbers itself right okay so most of you have got it correct so let's move on and now do the yes now do the LMA quick register your responses oh first of all this is the lead about cool right very good very good Anuya is keeping the lead do the LMA quick quick quick 10 seconds quickly do it oh got it right by solving this one come come on guys everybody just mark your responses it will help you later on so don't don't feel shy don't think that we are going to judge you on this no we are going to help you on this and once we get the data how you are you know performing during the sender Mars and all that then we will help you on that so okay 53 yep anyone else left quick quick I saw some 56 responses were there so 56 people should mark it anyways so I'm moving ahead now next question here is the question number four okay so time's up and I think you why is waiting time so long okay yeah so there will be few questions like that Monisha so 58 responses are here and I hope a few of you or most of you have actually seen that that there was something in the question the question was they're asking not correct so I hope you read this proper properly so you know so hence you have to read the question thoroughly before you attempt it because options will be you know both ways so you can see an every integer is a rational number in such questions what you need to do put a cross or a tick mark every integer is a rational number true or false true right the sum of rational numbers and a rational number is an irrational number true every real number is rational no right and every point on a number line is associated with a rational number not at all because there are irrational number also right so hence only a and b are true that means c and d are wrong so the option is b okay so good that you carefully read the question okay let's go to our leaderboard now and after four question the standing is something like this so here is oh my god so Anuya is the fastest again I think okay very good very nice very good going here good and do the element quick quick quick quick quick register see lots of people have lost it so you can you see now this is an important indicator that you guys are losing very easy questions because you are not reading the question properly so that has to be reinforced so we will you know we will we will keep on reiterating right so okay so fair enough let's go to the next question next question is here okay so Raghava we don't need Fermat's theorem here to solve this question very very simple one and this is based on your logic common sense yep so okay good that 53 people have got it right and it was very simple question it's a warming syndrome or anyways yes so you didn't need to simply factorize this and the factorization is simply 119 minus 111 and 119 plus 119 111 that's it so if you see this is anyways on even number and there are two factors so clearly this is ruled out this is ruled out it cannot be odd because this is it yeah so hence the only answer is b okay surely so any any explanation needed any explanation needed any further so let's go to oh this is okay so you don't need to calculate in such problems because that was the intent of the problem to see whether you can read that identity over there or not yes so good so now Anuya is maintaining a lead Nishant is going to give a close fight very good so very close only what very less 60 odd 70 odd marks difference okay do the element quick yep quick quick quick so most of you either guessed or there are few people who applied wrong concept okay no problem so we will move ahead pressure number 6 3 2 and 1 so let's see the responses how many of you oh there is some issue there that means not even 50% could get it right that's not good okay so how to solve these kind of problems so you have to use you know unitary method and then it becomes easy so a system system can be filled separately by two pipes in 12 and 16 minutes so let's say pipe a takes 12 minutes to fill one full tank let's say so in one minute it will be able to fill only one 12th of the tank and we will be able to fill one by sixteenth of the tank in one minute right so this is one minute work one minute one minute okay so in one minute if both of them are together how what fraction of the tank will be filled in one minute in one minute if both of them are together so 1 by 12 plus 1 by 16 this much tank will be filled okay so hence how much what is this fraction if you see this is nothing but 7 upon 48 sorry yeah 7 upon 48 so in one minute 7 by 48 of the tank can be filled so how much time will it require to fill the full tank so it will be 48 upon 7 1 upon 7 by 48 right is this is this understood so this is the answer 48 by 7 anyone wants any further explanation anyone didn't understand you can put X in the chat we can explain again right all clear okay once more once more fair enough they go so let me oh I can't let me take this color so what I'm saying is in 12 minutes one full tank one full tank let's say I am saying one T okay now here here 12 minute one tank so in one minute how what fraction of tank will be filled by this first pipe let us call it as a so in one minute one upon 12 12th of the tank will be filled is this clear is this clear in one minute one 12th of the tank will be filled yes or no correct by a by b 1 by 16th of the tank will be filled in one minute is that understood Monisha don't don't type so long messages it becomes for me it becomes difficult to interact okay guys those who are facing issues okay is it okay one minute one 12th and b is one 16th is this clear guys those who are having trouble so if I open a plus b together what will happen I will get one by 12th plus one by 16th of the tank filled is it it in one minute now this is one minute output in one minute this much portion of tank will be filled how much is this portion this is 7 by 48 if you add them you'll get 7 by 48th fraction of the tank is going to be filled in one minute so full tank will be will require how many minutes together right so it's reciprocal yes so it will be one upon 7 upon 48 these many minutes will be required do you get the point let's say let me give you an example with smaller smaller number let's say half point five or instead of one half of the tank is filled in one minute so how many minutes will it take for the full tank to be you know or the tank to be filled one upon half that is two minutes not it similarly if one tenth of the tank takes let's say one minute one tenth of the tank is filled in one minute then full tank will take how many minutes one upon one upon ten that is ten minutes right similarly if 7 by 48th of the tank takes one minute to fill so one full tank will take how many minutes 7 by 1 by 7 by 48 which is 48 upon 7 which is nothing but this answer now clear everybody is clear clear so this is this is how you should be solving it and the usual trick is this one upon one upon this basically we did this one upon one by 12 plus one upon one by 16 so for NTSC you remember this so there are you know two pipes with 12 minute and 16 minute each so together that we can do in one upon one by 12 plus one by 16 let's say there was a third pipe which was taking let's say 20 minutes so then all together the answer will be one upon one by 12 plus one upon 16 plus one upon 20 this will be the final answer so you can do it directly is that clear the formula angle is clear how to you know do it faster up okay let's go to the next one let's go to the first the leaderboard and here is the leaderboard here is the leaderboard okay so Raghav did this okay so Raghav is on the second second second place okay next is 11 quick 10 seconds guys oh this is a two one minute this thing quick quick quick quick quick quick quick I'll have to reduce the time limit there 33 quick quick you can do it faster you have to submit any ways to go into the next question come on do it good that this is zero this is very very bad didn't read the question is very depressing so oh there is one the moment I said it was bad and I got one that is something okay fair enough purposely oh is it so let me let me see in the background I have all the data no question number what so I'll figure out who was this okay here is the next question remainder here so there are some guess works going on don't do that spend some time solve it okay so let's see the response from the public okay so most of you have got it right but then again less than 50% so you have to calculate in this question and you know that for remainder theorem what what is the thing to be applied so you know you have to first equate 1-2 x to 0 so clearly x is half okay and then put that there so hence 4 into 1 to the half to the power 4 replace x by half so it will be 1 by 16 minus 3 by 8 minus 3 by 4 plus half minus 7 isn't it so hence it is 1 upon 4 which is I will reduce the denominator to 8 so 1 upon 4 is 2 upon 8 minus 3 upon 8 minus 6 upon 8 plus 4 upon 8 minus 56 upon 8 is it so 2 minus 3 is minus 1 minus 7 plus 4 is minus 3 minus 56 minus 59 so this is the answer okay yes it should be it should be plus 1 by 2 minus 1 by 2 sir where where so x is equal to minus 1 by 2 x is equal to half so you have to equate it to 0 no this equal to 0 so what will you get x equals to half right on each other it okay so this is minus 58 by 8 okay so let's go to the next question now before that your leaderboard okay so now things have now I think people have lost 100% accuracy oh that's sad so here is where the 100% accuracy goes down so quick quick quick quick quick quick quick quick quick quick see this exercise is very important because at this stage as I have been telling you it's not important only to mark the right answer you also need to understand where are you going wrong and then only so all these all these things will be sorted out whatever see the aim is that this particular left hand side bar should be the highest and everything else should be the least then only we achieve our goal otherwise we keep on struggling okay right okay so only 49 people have marked their please please mark your responses can you please mark your response all of you otherwise you will get 0 0 0 0 over there okay never mind your call so here is the next question if you don't mark your response you'll get 0 0 0 on those so the back end report this is the easiest question I believe most of you should have got it see most of you have got it right okay so let's go to this quickly oh yeah so this was very easy again as I told you you have to external angle theorem is what we are going to apply here so 2 y minus x is equal to y minus 5 plus 2x plus 40 right so clearly y will be equal to so this y goes and kills this y 1 1 of them so this is 3x plus 40 for 35 right so x is 5 degrees so 15 plus 35 okay okay okay so let's go to the next question any explanation needed guys any explanation needed tell me okay so the substituted the value of exit first what I got the answer is 45 degrees oh calculation mistake my friend that's where you have to stay safe tell you quickly do it register your responses pick so that we get an idea of where is the group going okay so 43 47 40 come on come on come on quick quick you'll get zeros huh hello ticket next next question on board I hope the diagram is clear okay so here is the response graph oh that's possible could solve it so the underlying concepts were the concept of the angle subtended at the center and at the arc that's point number one and then midpoint theorem right so so hence what is this DEF where is DEF so DEF this is 30 degrees now clearly this will also be 30 degrees because this is isosceles triangle right so 30 degrees now if that is 30 degrees then you know since they are parallel so these are these are parallel lines is it a parallel lines midpoint theorem so D and E are the midpoints of the respective sides so DE is going to be parallel to AO right how is DF equals to DE okay see here E is the midpoint okay and F is also the midpoint and OA is the radius this is the radius this is the radius yep okay now that means OF is equal to OE right so half of it is equal right is that clear also they have any problem now okay so I'm just skipping that step now so hence if that is clear to you so if this is 30 degrees and they are parallel then this happens to be 30 degree as well this one and with the same logic this happens to be 30 degree as well because here is also 30 degree and this line is parallel to this line okay can you explain again once once more see this angle is given to be equal to 30 degrees okay and what is given this side is equal to this side right is that clear and this is midpoint so if you see this angle this side all are equal okay all are equal and this angle is also equal this angle theta is equal to this angle theta why because OAB this triangle is an isosceles triangle why because OA is equal to OB is the radius right Nitya clear is it clear to everybody so why what does this mean this means that this line ED FFB is equal to ED I am not proving by congruence here so congruence basically side this side this side and this angle are correspondingly equal to this side this side and this theta angle so hence these two triangles are congruent and hence these two sides are equal that you can do is skip also because you know you know there is a perfect symmetry so these two sides are equal so this angle is 30 degree as well isosceles so far so good so far so good now AD is equal to AF AD is equal to AF I'm not saying AD is equal to AF okay so let me put another sign here is that does that make sense now Nishant I'm not saying AD is equal to AF any difficulty please please ask me again I will again explain don't worry right don't worry about timing so 30 degrees now what I'm saying is don't you think this arrow line and this arrow line are parallel why are they parallel midpoint theorem so if you join the midpoints of two sides of a triangle it will parallel to the third side right so hence by that logic if these two lines are parallel this angle happens to be 30 so this angle is also 30 alternate interior angle correct this angle so let me draw with some other so this also is 30 30 30 yep so the moment these is 30 30 this is 30 30 what will be angle o 120 degrees my angle some property of a triangle so if two angles are 30 30 each the third angle has to be 120 now 120 is the angle subtended at the center so what will be the angle subtended at the segment here 60 half of it makes sense makes sense is there any difficulty understanding so this was a little bit more more number of theorems and more complicated it was again it was a mtsc problem so now are you comfortable everyone is comfortable or not if not then you can put x and what we can do is again after the session we can come back to this question okay so let's go to our leaderboard okay so where is the leaderboard yeah here is the leaderboard okay Shreja you could not get it this time yes okay let's go to the element quick 10 9 8 7 6 5 4 3 2 1 0 okay so let's go to the so 10 seconds is good good enough for responding to this okay let's go to the 10th question here is the question quick guys you have to finish also so hence you have to be faster the length of the longest rod that can be fit into a cubicle room of 4 centimeter side is okay so you didn't get this one what is the okay 4 3 2 1 very typical standard question standard question it is and oh lots of you have got it anyways yes so basically the diagonal is the longest side is it the diagonal of our cube is the longest longest what you say length inside the cube right sir what centimeter what what did I say oh there was something let's see the question then oh a cha-cha-cha there is a yeah so but then all our all of them are in meters you could have a really different you know do you think it will be different answer in it so Rudra just because it was in meters you could not answer this yeah there I understand I admit that there's a typo here CM it should be CM but anyways the answer right answer is 6.9 to 8 right so hence how to do that so always remember the longest rod that can be fit in a cube cuboid is the diagonal oh this one diagonal so what is happening just a diagonal yes diagonal is under root side square side square plus side square right s root 3 right so root 3 so 4 into 1.7 3 2 is this 6.9 to 8 root 3 is 1.7 3 2 you have to remember these data 1.7 3 2 is root 3 so root 3 into 4 is 6.9 to 8 okay diagonal is the longest side inside the cube please remember this let's go to the next question and we will prove that also how is the diagonal longest we will prove that in the class but right now remember that okay surely let's go to the next so here is your LMA 10 9 8 7 6 5 4 3 2 1 0 so let's go to the next question five more to go guys pick okay so here is the time up so okay this is something something what happened here okay so let's see easy question no yep they go in a sphere and a cube have same surface areas so what is a surface area of a sphere 4 pi r square and this is equal to surface area of a cube which is 6 a square right now this can be written as pi into 2r whole square is equal to 6 a square so 2r is d diameter and that's what you have to be very very careful because it says diameter and not the radius so don't find the ratio of radius so what will happen this is pi d square is equal to 6 a square that means you have to find diameter of the sphere to the edge so diameter will be above and a d by a whole square 6 by pi right so d by a is root 6 by root pi d is the answer any explanation further required I hope you understood this all of you understood this just give me a thumbs up y y y y if you all understood this part very good very good very good very good let's go to the next problem before that let's see who is now leading the leaderboard and here is the leaderboard okay good so Raghav solved it for oh my god so many people could not get it oh that's sad but Bharat was fastest good very good Bharat nice let's go to the 10 9 8 7 6 5 4 3 2 1 0 so we'll wait only for 10 second guys because you know all the all the responses must be recorded so that I can I can share this I will share this data with you don't worry let's question next question find the area of the triangle in square units so we can see the points oh sorry so so here look at the screen a is 1 comma 3 b is minus 1 comma 0 c is 4 comma 0 let me know when the time's up I'm not seeing it is the time up could you see the points now okay so no where is time up time up 15 more seconds cannot why why did you do that anyways now I think you know the points very easy lollipop question good 40 people got it right very good so let me explain quickly so what is the height height is 3 this is the y-coordinate so height is 3 and what is the base 4 minus minus 1 5 very good so half into base into height 5 into 3 15 by 2 7 points right it was like a you know you should have done in in your mind only you don't even require a pen and paper okay at times there will be very easy questions in NTSC so you have to grab on that okay clear let's go to the next question now so here is the leader board and yep these are the common mistakes for Sudev so you interchange x and y and all that so Raghav you took so much of time why my god coordinate points are given and then solving the even was okay she was fastest and here is LMA pick do it oh it's already nine come on guys we'll finish in five five six minutes gone do it one two three four five six seven eight nine and ten okay next question someone is asked to take a number from 1 to 100 the probability that it is a prime is so if you pick one one number from 1 to 100 all in all integers what is the probability that you will get a prime number these are some standard results you must be kind of you know so these questions will help you remember some standard results as well so you don't need to every time calculate these things okay so 49 people have responded so far and time's up how many primes are there in top hundred one 200 how many 25 very good so there are 25 primes you can count when you are having so much of time so I will tell you there are 25 primes in top hundred and then there are 25 such primes and how many numbers are there hundred so you have to pick one out of 100 so what is the probability one upon four right so I'm not going to the basics of formula and all that you did in the last last grade 9 also so there are 100 such cases out of which 25 are favorable so 25 of 100 is one upon four is the probability of picking up prime number okay very good any explanation needed here please let me know if you have anything which you could not ask you can also ask after the end of the session okay so you can stay back and ask the question okay so this is the leaderboard status and let's go to our okay some bullet fair here fair enough one two three four five six seven eight nine ten okay extra two seconds for all those who could not quick quick quick 40 only jaldi jaldi jaldi next 14th question if the mean of the observations xx plus three x plus five x plus seven x plus ten is nine find the mean of the last three observation observations okay so mean you don't know you have done mean last in a grade 8 also don't you know how to find out average of numbers right so you know how to find out average right what is mean mean is average you know right so hence basically what is happening here you are what is mean x plus x plus 3 plus x plus 5 add all of the number divide by number of them count of them x plus 10 this is the sum sum divided by count how many are there 5 and this is given 9 okay so from here what will you get you will get 5x plus 5 plus 3 plus 5 is 8 8 plus 7 is 15 plus 10 is 25 so 25 is equal to 45 this 5 goes here and become makes it 45 so 5x is 20 so x is 4 the moment x is 4 you need to find out the mean of these three numbers so what are the mean of that so 4 plus 5 is 9 so basically that number is 3x plus 5 plus 7 plus 10 if you add these two this plus this plus this you'll get 3x plus 5 plus 7 plus 10 divide by 3 is the answer now x is what 4 so 12 plus 5 plus 7 is 24 plus 10 34 by 3 is the answer that is 11 1 upon 3 so this is right clear so mean is a very common concept so don't tell me that you don't know how to find out mean and here is the leaderboard and and here is here is the leaderboard okay Krishna could not do it why fair enough so quickly guys before the last question you have to do this so mark it wrong quick quick quick 10 seconds 10 9 8 7 6 5 4 3 2 1 0 right okay so let's go to the next question last question of the evening guys do it cautiously very easy to close the quiz so that you are now warmed up from next quiz onwards you will see the intensity going up so the academic year is on warming up is done next quiz onwards please be ready for some good brainwalk Raghav bangrit in like three seconds without thinking for marking also you need to think okay anyways so fair enough technically no no no no no so when there are three options rectangle rhombus and this thing there you have to pick the most appropriate okay so the point a 9 comma 0 so you can quickly draw a reference so let's say this is 9 comma 9 comma 0 9 comma 0 will be this point is it and then 9 comma 6 go up 6 units this is 9 comma 6 x coordinate remains the same minus 9 comma 6 so you go here becomes minus 9 comma 6 because the y coordinate remains the same and minus 9 comma 0 back to x axis so this is minus 9 comma 0 so it it's a rectangle perfect rectangle why because there is a 90 degree here and is a parallelogram so perfect rectangle right answer is B I'm sorry sir but aren't all squares rectangles now what did I say is this is this figure a square by any chance no why because these sides are unequal right all the sides I'm sorry sir it is the trapezium oh what am I saying it is not a trapezium why because in trapezium only one pair of sides must be equal and parallel right here both these sides are equal and parallel so this is not a trapezium nor a square nor a rhombus right it's a rectangle is that okay so hence final answer is this one and but I'm smart I will do this first before you go okay so do it do it quick one two three four five six seven eight nine ten see ma for me this is my data boss you enjoy with your leaderboard but for me this is my data so hence I am entitled to get this one so I request all of you spare some some time and please do this please please please yes I will share hence I want until as you share the data how can I comment on what you do right so this is going to be very very important so I'll compile all your errors errors and I'll share with you okay so here is the final leaderboard of the evening and who wins Raga Pandey wins okay oh Srijan is close but oh okay so Raga Pandey from NPSHSR is the winner I think Raga is this the first time you have won a centum hour I don't I have never seen you winning a centum hour no no no three cheers for Raga okay all all these all people please you know cheer up I think it's the first or second yes so this is the after one year Raga has arrived and he has got the first position in centum hour so very good Raga so you have you know held your nerves so very good good show but it came a little too late but never mind thanks guys thanks for joining so on Thursday we are having a physics sorry sorry you saying something sorry it's not like I have never won before I don't mean to say pulling your leg I know so you are my old Khiladi you know so anyways so what I was saying is on Thursday you will be having physics centum hour with Ankur sir please join us then also and improve your accuracy and speed okay thanks for joining and let's try increasing the intensity from next centum hour onwards bye bye take care good night see you again in classes bye bye bye take care