`7^(th)` term of an A.P. is 40. Then, the sum of first 13 terms is

If the 7^(th) term of n A.P is 40. Then the sum of its first 13 terms is

7th term of an A.P. is 40. then the sum of the first 13 terms is

The 13^(th) term of an A.P is 3 and the sum of first 13 terms is 234 . Find the common difference and the sum of first 21 terms .

The n^(th) term of an A.P is p and the sum of the first n terms is s. The first term is

The sum of 3^(rd) and 11^(th) terms of an A.P. is 34. Find the sum of its 13 terms.

If the sum of 12^(th) and 22^(nd) terms of an A.P is 100, then the sum of the first 33 terms of the A.P is

If 12th term of an A.P. is -13 and the sum of the first four terms is 24, what is the sum of first 10 terms ?

If 12th term of an A.P. is -13 and the sum of the first four terms is 24, what is the sum of first 10 terms ?

If the 12th term of an A.P. is -13 and the sum of the first four terms is 24, what is the sum of the first 10 terms ?