If 10th term of an A.P is 13, then the sum of 19 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 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 ?

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

The sum of the 4th term and the 8th term of an A.P is 24 and the sum of the 6th term and the 10th term is 44. Find the first three terms of the A.P.

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

The twelfth term of an A.P. is (-13) and the sum of its first four terms is 24, find the sum of first 10 terms of the A.P.