Video Brain Teaser #2

[wassuppeeps]

He said you have to remove any two of the inner adjacent sticks. This is incorrect. You have to remove any two perpendicular inside sticks.

[videomathtutor]

@wassuppeeps Same thing.

[videomathtutor]

@NoClearly That is incorrect. Not all rectangles are squares.

[videomathtutor]

@NoClearly A square is a quadrilateral (4-sided figure) with 4 equal sides and 4 right (90 degree) angles. A rectangle is a quadrilateral (4-sided figure) with 4 right (90 degree) angles. Its sides do not all have to be the same length.

[amanedot]

@SameeraOfficial it was actually simple. the small square is inside the bigger square :)

[nygiantsfan3000]

another solution is take the left side from the bottom left hand corner square, and the righte side from the top right hand corner. two squares lfet, no more

[videomathtutor]

@nygiantsfan3000 No, that would leave more than just 2 squares.

[nygiantsfan3000]

@videomathtutor i only see two? D: could you please tell me where the other two are?

[videomathtutor]

@nygiantsfan3000 What other two? Your solution leaves extra sticks. I want a solution that has ONLY two squares, nothing else.

[nygiantsfan3000]

@videomathtutor oh!!! it wasn't clear in the video though. you said remove two sticks and leave two squares. that is what i did. you never said in the video that there could not be extra lines. when you said no, that would be more than just two squares, i thought you meant there was more than 2 squares. so if i didnt have that explanation, my answer is still right.

[videomathtutor]

@nygiantsfan3000 Not really. I did not say you can leave extra stuff. I said leave two squares. If you leave more than just 2 squares, then you are not following what I asked.

[nygiantsfan3000]

@videomathtutor nope. you did not mention if you could leave extra stuff, which means it is fine. i am following what you asked. but if there cant be extra stuff, ur wrong too. u have two squares and a hexagon. then is impossible unless u can remove four sticks. why post a video with no right answer?

[videomathtutor]

@nygiantsfan3000 It is a square shape. Not a hexagon. If the sticks were all at different angles then it would be a hexagon.

[nygiantsfan3000]

@videomathtutor what? that doesnt make ANY sense. u have a big square as the entire thing, and inside is a small square. apart from the small square, a hexagon takes up the rest of the room. how is that not a hexagon? it is a six sided shape, count it if you dont believe me.

[videomathtutor]

@nygiantsfan3000 A side of a square can be longer than just one stick.

[nygiantsfan3000]

@videomathtutor i know that. why are you telling me that? it has absolutly nothing to do with the video or my comments. and whatever you say, nothing will change that shape from being a hexagon. i know a side can be longer than won stick, more than 6 sticks make up the hexagon, but out of the 8 sticks that make the hexagon, 6 sides. i dont see why you should tell me a fact to me that is useless cause i already know it. and please stop lieing. im smart enought to know that is a hexagonsostopmeany

[videomathtutor]

@nygiantsfan3000 By the way, a hexagon is a 6-sided figure. No more, no less. The "big" square uses 2 sticks per side. No, it is not an octagon (8-sided figure). I am getting a bit tired of this back and forth, so I won't be allowing your comments here anymore. Please feel free to enjoy the other videos I have on this site. Have a Nice Day.

[MsRhogen]

it was not tough!!!

[zacharybaringer]

aahh nerd allert run for your lives

[videomathtutor]

@zacharybaringer News Flash! Nerds run the world now. There would be no YouTube, Video Games, or computers without them. You like Facebook? Nerds created it too! 

[oscarencored2]

@videomathtutor But nerds dont even have facebook -_-

[videomathtutor]

@oscarencored2 Nerds INVENTED facebook!

[oscarencored2]

@videomathtutor but nerds dont have friends so it dont work for them :p

[videomathtutor]

@oscarencored2 That's OK. 99% of the "friends" people have on FB are not *really* their friends anyway.

[gabe131313]

I would take two off one side. Then only two would be left tecgnically squares

[videomathtutor]

@gabe131313 You would have more than just 2 squares left, so it is not a solution. Sorry.

[Grove537]

i figured that out at the begging...simple.

[videomathtutor]

@Grove537 I hope you meant: "beginning." I'd hate to see you beg.

[joshuatube511]

accually its one a square but the other is and L shape :L

[videomathtutor]

@joshuatube511 Please see comments below.

[CosmicInsanity28]

a square can be a rectangle. geometrically.

[videomathtutor]

@CosmicInsanity28 A square IS a rectangle.

[ukguy]

@videomathtutor yep a square is a rectangle but a rectangle isn't a square

[videomathtutor]

@ukguy But some rectangles can be squares.

[sagitario114]

take the tops of the top 2 squares wich makes 2 squares and some random lines!!!!

[videomathtutor]

@sagitario114 Which is not allowed.

[videomathtutor]

@sagitario114 Err... No.

[sagitario114]

@videomathtutor :P

[w3bkinzprincess]

at the end the big top one is not a square because a square as all even side and that does not it does'nt even have 4 SIDE WHATS WITH THAT?

[videomathtutor]

@w3bkinzprincess Please read comments below.

[SounddeSPOREdo]

I am pretty sure a shape with 6 sides is a hexagon

[videomathtutor]

@SounddeSPOREdo Yep, but that is not relevant to this problem. See other comments below.

[CP661Penguins]

i knew it :3

[TheMentalistish]

I worked that one out as well :)

I like the music

[mrmario174]

oh i was gonna say ur not a math tutor at all if that l was a square, but u meant the whole popsicle stick bunch.

[videomathtutor]

@mrmario174 Yep.

[autyn56]

there is 5 ways of doing it

[lenin713]

wtf... theres like 10 diff ways

[videomathtutor]

@lenin713 Probably. One would be sufficient.

[Narutogirl727]

When you took away two squares you had a small square but the other shape wasnt a square...

[videomathtutor]

@Narutogirl727 Yes, it is a square. Look carefully how a wave my hand around it. Don't look at the "L."

[markcole97]

I thought he ment 2 smaller squares ;P

[Tom31994]

easy...

[ReddPrawns]

For those saying it's not a square, remember: "One SMALLER square, and one LARGER square." The smaller square is INSIDE the larger square.

[nikkorap]

second solution is that take out any bottom left stick and any upper right stick

[videomathtutor]

@nikkorap That would not just leave you with 2 squares. Sorry.

[123matster]

That is not a square that has 6 sides that is an irregular hexagon

[videomathtutor]

@123matster It is a square. You are not "seeing" it.

[Coly98]

Hmm I was reading ur comments so I found a second solution!!!! what if you take off the two middle sticks horizontally or vertically? Wouldn't that make 2 rectangles which could be squares or am i crazy?

[videomathtutor]

@Coly98 Those rectangles formed would not be squares.

[BximTooJOHNLY]

not hard yet...

[tox921]

that was not a square at the end

[videomathtutor]

@tox921 See comments I made below.

[mostterr3]

ey por k kitastes tu bos k aburido if you do¨t nou any spanuch go an lern

[videomathtutor]

@mostterr3 I am fluent in Spanish (I grew up in Mexico). Apparently you are not. Learn to spell (in English AND Spanish!). The video is in mono, not stereo. Please adjust your audio output to listen to it.

[kutiekittie23]

no offense but his voice is boring but he's smart

[videomathtutor]

By saying my voice is boring IS OFFENSIVE. May I hear how your lovely voice sounds?

[ImMyXD]

i got it

[supergreatsuper]

I got this one too. too easy!

[videomathtutor]

I know. So?

[sydgirl98]

also if u took the 2 sticks in the middle they make 2 rectangles and a rectangle is a square

[videomathtutor]

All squares are rectangles, but not all rectangles are squares.

[bestcod4plaer]

A rectangle isn't a square.

[videomathtutor]

Some rectangles are square.

[llamafan345]

No rectangles are squares. But all squares are rectangles!

[videomathtutor]

@llamafan345 That is incorrect. SOME rectangles are squares.

[Alivender1]

@sydgirl98 since when? rectangle has 4 90degrees angles but square has those AND all sides equal, so square is a rectangle BUT not the other way around.

[naganokumas]

One of your other postings prompted this from me.

Forgive me that it is unrelated to this one.

I've noticed that when you write the variable "x" in your mathematical equations, that you do it with two straight lines intersecting.

I was taught to write the variable "x" as two crescents back-to-back. And that I should reserve the two straight diagonal lines intersecting for the multiplication sign.

Clarification on this will be most appreciated.

[videomathtutor]

I think I "italicise" the x (make is a bit curvy) on some problems I post on the board. It really is not necessary when printing my hand. Italics are used when writing the x variable in PRINT, like in a textbook. There are also math variables that are in bold print in books, but are not when written on a blackboard (these get a little bar/arrow written above them, in this case). If you see my printable math notes, you will see that I do italicize the variables correctly.

[OzaiFan]

I never did get this one before the solution was revealed...

[jibeth03]

wow people get very defensive when they are proven wrong. it's like they think you are attacking their intelligence.

[Teh1337man]

Wow, didn't notice the LARGER square is seemed BEHIND the SMALLER square.

[meiqing123]

I gt the other way o.o

[bleachtrainer124]

that is not a square.... that is a free form with three sides basicly a screwed up triangle

[videomathtutor]

*SIGH*

See comments below.

[the1godofwar]

@videomathtutor Ha, i love how you deal with people in a nice way, and never seem to be proved wrong, haha you're a cool guy :P

[videomathtutor]

Nobody's Perfect. I have been wrong before (just ask any of my ex-GFs!). I do try my best to provide the correct answers. Thanks for the comment!

[idrawbetterthanyouXD]

the outline is a square

[alirocks19]

that not a square:[

[videomathtutor]

Yes, it is. You are just not "seeing it." Look at my hand movements.

[alirocks19]

oh yeeeeaaaahhh ! i get it

[nejipijama]

the bigger square is the outline

[lissy4214211]

a square consists of 4sides. the larger one has 6?

[videomathtutor]

No, it has 4 sides.

[EasyTutorialsTeam]

i got this one easy :D

[ElectronicCukie]

Ohh i get it now... i mean i get it but i didnt get it o_o

[videomathtutor]

Got it.

[ChicWerewolf]

but the big ones not a square! its one of those things in tetris!!!!!!!

[videomathtutor]

See comments below.

[fourofdiamonds1]

he means the whole thing

[nickole999]

@ChicWerewolf he meant the whole thing as in the outside shape not the tetris looking shape.

[sk8rdman]

whoot, I got it

[LaurieCurie230]

It makes sense now!Sorry,I am in 3rd grade.

[LaurieCurie230]

You could also take off two in the middle and get two rectangles which are technically squares but wider one end and shorter the other

[videomathtutor]

Nope. All squares are rectangles, but not all rectangles are squares.

[ctoddmc]

your wierd

[videomathtutor]

Yes, I am.

By the way, try writing: "You're weird" instead, what you wrote just looks weird.

[kebs007]

Nice one... "wierd" instead of weird... NIce vid... I'll show it to my friends and of course credit you... Ja!

[Elainelily830]

you are very annoying

[videomathtutor]

No, I am not.

[votshtoyalyoobloo]

why can't you remove any two sticks from one side and leave two squares with meaningless lines sticking out? It leaves two squares

[videomathtutor]

It does not leave JUST 2 squares.

[votshtoyalyoobloo]

Sorry I'm just being difficult because the word "JUST" isn't in the video.

Also your answer has a bit of a loop-hole in that you suddenly add the concept of multiple layers with theoretical overlapping sticks. Who's to say there aren't more squares behind your squares?

Tell me if this is just annoying

[videomathtutor]

Your solution leaves 2 squares PLUS more stuff, which is not 2 squares. I don't need to say "JUST." There are no squares behind the solution. "Theoretically," the sticks are all on the plane, so there are no multiple layers.

[votshtoyalyoobloo]

If they're both on the same completely two-dimensional plane then your solution also has "PLUS more stuff" in the form of a large L shape.

[videomathtutor]

The plane is irrelevant. The L is a perception on your part. I see a square.

[votshtoyalyoobloo]

Without introducing the concept of multiple layers, there are definitely three shapes in that solution: the lines that make up the little square, the lines that make up the big square, and the lines that make up the big square with the little square taken out (sort of L shaped). So why doesn't this shape count?

[videomathtutor]

It is not something extra.There a big square and a little square. If you see an L, that is your problem. You are over thinking Brain Teaser. By your argument, there are actually dozens of "shapes" there. There are right angles (big and small), U shapes, (big and small), all sorts of "snake-like" shapes too. Try to keeps things simple.

[votshtoyalyoobloo]

I just realised I was thinking of every puzzle as one large object divided into square cells. In your solution here I saw one shape divided into two cells, that's why it was bugging me. If I think of it as having to use up all the sticks to get the required number of findable squares regardless of other findable shapes it makes sense then

sorry :)

[videomathtutor]

It's OK. Nice discussion. I think we both benefitted from the mental exercise!

[TehRobloxChannel]

He said. They dont have to be the same size's actully. Learn to listen.

[videomathtutor]

Actually, I didn't say that either, until I revealed solution.

[TehRobloxChannel]

Oh yea. Lol. I need to learn to listen myself.

[videomathtutor]

It's OK. I have a hard time listening to women. It gets me in trouble ALL the time!

[kevin30081]

you said they have to be the same size!!!!! one is bigger!!!

[videomathtutor]

No, I didn't.

[RMluvsrotties]

He said they don't have to be the same size

[endtexas3]

also you can take two of the outer sticks and it leaves two inner by deforming the big one and 2 of the other iners whose sides were taken off

[videomathtutor]

No, that does not meet the requirements I placed.

[iammeandthatsall]

that's what i thought of first xD

[cutiekelie]

Wow! Cool! I didn't think of that!

[videomathtutor]

***SIGH!***

Read comments below, please.

[muddyducky123]

how come i cant hear him?

[videomathtutor]

Video is in mono, not stereo. Please adjust your audio output.

[xxxgrovilexxx]

nice

[funfruity]

The very beginning sounds like billie jean from MJ

[MyRandom3]

u is a subid me cus sloved it and if u went to school u would know that that a sqare has all epal sides so u is wrong !!!!!!!!!!!!!!!!!!!!!!!!!!!11

[videomathtutor]

Please go over what you type before you post a comment. It was nearly impossible to decipher what in the world you are saying!

I think you are saying that I don't know what a square is. I am a professional math tutor, so I would think I would know what a square is, and not only does it have 4 equal sides, but also 4 right angles (both conditions must be met to be a square). You are not "seeing" the larger square, I believe.

[DarkPikaruto]

Shut up! Okay. So you're saying squares have to all be equal? Nonetheless, they don't have to be. You ever hear anything about congruent or similar? Think before you put up comments like these! Got it?! >=(

[videomathtutor]

Oh... I got it.

You may want to take some of your own advice.

I did not say all squares are equal. That would be silly. I said their sides must be. I do know what similar and congruent mean (I am a math tutor!). This is not a geometry lesson, so I did not want to be *too* mathematical in my definition. For layman's purposes, saying a square has equal sides is enough to get the meaning across.

[DarkPikaruto]

... Excuse me.... but I was actually commenting on MyRandom3's comment. =3

[BoyintheMachine]

LOL...I got it right. I like these. They make you think creatively.

[TheJorrrdan]

1 of them isnt even a square

[videomathtutor]

Yes, it it. You just don't "see" it. Look how I wave my hand around the sticks. I am not referring to the "L" shape.

[JusZLiMiT]

Ha how can it not be?? he talkin bout the outside big square n the little square inside the big

[GemmaSword]

Never got that one haha.

[ADUKA17]

Ok I couldn't get number one.. but this I thought I had it...

I took the two up side sticks so I was left with like this:

l_l_l

l_l_l

see it??:D

is it the same??:S

thus it count?

[videomathtutor]

Sorry, that is not a solution. You left more than just 2 squares.

[Skepdisc]

I realize that's not the desired solution, but I only spot 2 equal-length 4-sided figures in ADUKA17's answer. Might you be interested in making a rebuttal video for us?

[videomathtutor]

He left 2 squares plus 3 sticks. That is not what I requested.

[MrFoolHead]

i got it im smart

[dUhNEwnITe]

that was rlly easy to me

[georgef551]

Took a lot longer than #1, but just before you gave the answer, I figured it out.

Getting tougher! #3 will probably get me at this rate.

[JuicyLucy118]

Same here

[sn4facebook]

ive known that since like third grade no joke

[superstar5565]

for the first one i was thinking of staring at one to make it mind divide into two. wow you are good!

[videomathtutor]

O... K...

[HiToWhoeverReadsThis]

technicaly its not a square! ( the bigger one)

[videomathtutor]

Sigh...

See comments below.

[colinz1031]

i get that easily....#1 is more harder to answer to me..hahaha

[autryj00]

Or you could take away one edge. Two full squares, two open shapes that don't even count as polygons.

[videomathtutor]

Ah... but then you are not just leaving 2 squares.

[bobo040523]

at first i thought there was no way,, i could only think of ways to make a rectangle but; this guy is good

[MusicianofStark]

But you're using a 2D graph presenting a 3D concept?

[videomathtutor]

No I am not. No 3D here.

[mrnacj]

you're thinking of a cube buddy.

[kashiwazakinenji]

How can you know the big one is a square, you can´t just assume something like that!!

[videomathtutor]

There is nothing to assume. The big one *IS* a square!

[SystemOfAtte]

__

|__|

|__|

Another solution!

[videomathtutor]

Nope. That creates 2 rectangles, not 2 squares. (See other comments below for more details).

[kingdeamon18]

ooooor you can take off two sides. that will leave 2 squares. you never said the rest had to look like a shape such as this

__

l l l

----

l l l

its hard to draw with comments but i hope you get the idea. just take off both sticks on one wall

[videomathtutor]

I said to **ONLY** leave 2 squares. That means you cannot leave anything else.

[prettygal0101]

i saw the big square hahah lol

and oh yea i like ur vids

[lilwuver08]

the larger polygon isnt a sqaure... sir may i say every square is equal in length on each side and has four sides the polygon you had would be not a square lol. the smaller sqaure yes but the larger shape doesnt count... its gonna confuse children if u mix up shapes =P

[videomathtutor]

You are just not "seeing" the bigger square.

[daddyslittleshopper]

um firstly i pretty positive that he ment for the image to look like there was a small square on top of a big square so ur wrong and he is right get ur facts straight before u say stuff

[linny711]

lol

[cgllisa]

the big "square" was not a square so that no 1

[videomathtutor]

Read my comments below.

[razjr94]

rectangle aren't square but squares are rectangles