[" 7th term of an "AP" is "40." The sum of its first "13" th "],[" 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

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

The 5th term of an AP is 20 and the sum of its 7th and 11th terms is 64. The common difference of the AP is

The sum of the 4th and 8th terms of an AP is 24 and the sum of its 6th and 10th terms is 44. Find the first terms of the AP.

The sum of the 4th and the 8 the terms of an AP is 24 and the sum of its 6th and 10th terms is 44. Find its first term.

The 12th term of an AP is -13 and the sum of its first four terms is 24. Find the sum of its first 10 terms.

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

The 9th term of an AP is -32 and the sum of its 11th and 13th terms is -94. Find the common difference of the AP.

The 4th term of an AP is 11. The sum of the 5th and 7th terms of this AP is 34.Find its common difference.