 Hi and welcome to the session. I am Shashi. Let us do one question. Question is choose the correct choice in the following and justify. Second part is 11th term of the AP minus 3 minus 1 upon 2 2 is A 28 B 22 C minus 38 D minus 48 1 upon 2. We have to choose the correct answer. First of all let us understand that the nth term of an AP with first term A and the common difference D is given by A n is equal to A plus n minus 1 multiplied by D. This is the key idea to solve the given question. Let us now start with the solution. We are given AP minus 3 minus 1 upon 2 2. Clearly we can see the first term of the AP is equal to minus 3 so we can write A is equal to minus 3 and D is equal to minus 1 upon 2 minus minus 3 which is equal to minus 1 upon 2 plus 3 which is further equal to minus 1 plus 6 upon 2. Or we can say D is equal to 5 upon 2 so therefore D is equal to 5 upon 2. Now the nth term of the AP A n is given by A plus n minus 1 multiplied by D where A is the first term of AP and D is the common difference. Now this we have already read in key idea. Now we have to find 11th term so we can write 11th term is equal to A is equal to minus 3 so we will write A is equal to minus 3 plus n is equal to 11 so we will substitute n is equal to 11 minus 1 multiplied by 5 upon 2 as D is equal to 5 upon 2. So we have substituted the value of A n and D in this expression so we get 11th term is equal to minus 3 plus 10 multiplied by 5 upon 2. Now we know to 5 cut n so 2 will get cancelled and we will get 5 multiplied by 5 minus 3 so this implies 11th term is equal to minus 3 plus 25 this implies 11th term is equal to 22 so we can write 11th term of the given AP is 22. So our correct answer is B so we can write hope you understood the session have a nice day.