Find the sum of all the 11 terms of an AP whose middle most term is 30.

Find the sum of all 11 term of an AP whose middle most term in 30.

Answer the following by a number or a word or a sentence : Find the sum of all the 11 terms of a finite AP whose middle most term is 30.

Assertion (A) : Sum of all 11 terms of an A.P whose middle most term is 30 is 330. Reason (R ) : Sum of first n terms of an A.P is given by S_(n)=(n)/(2)[a+l] , l is the middle term

Find the sum of the first 30 terms of an A.P. whose nth term is 3 + 2n.

Find the sum of first 20 terms of an A.P. whose first term is 3 and the last term is 57.

Find the sum of the first 51 terms of the A.P.: whose second term is 2 and fourth term is 8.

Find the sum of first 30 terms of an A.P. whose second term is 2 and seventh term is 22.

Find the sum of first 17 terms of an AP whose 4th and 9th terms are -15 and -30 , respectively.

Find the sum of first 17 terms of an AP whose 4th and 9th terms are -15 and -30 , respectively.