[hline35," Which term of "AP-2,-7,-12......" Will be ",-122." Find the sum of all the terms of this AP.",5]

Find the sum to n term of the A.P.1,3,5,7.....

Which term of the AP -2,-7,-12, … will be -77 ? Find the sum of this AP upto the term -77 .

Which term of the AP -2,-7,-12, … will be -77 ? Find the sum of this AP upto the term -77 .

Find the sum of 23 terms of the AP 17,12,7,2,-3,….

Find the sum to 25 terms of the A.P. 5, 7, 9, 11, …

Find the sum to 25 terms of the A.P. 5, 7, 9, 11, …

The first term, common difference and last term of an A.P. are 12,6 and 252 respectively, Find the sum of all terms of this A.P.

The third term of an AP is 1/5 and the 5th term is 1/3 find the sum of 15 terms of the AP:

The sum of 5 and 15 terms of an A.P. are equal. Find the sum of 20 terms of this A.P.