If the sum of 16 terms of an AP is 1624 and the first term is 500 times the common difference, then find the common difference.

If the first term of an A.P. is 100 and sum of its first 6 terms is 5 times the sum of next 6 terms, then find the common difference of the A.P.

If the first term of an A.P. is 100 and sum of its first 6 terms is 5 times the sum of next 6 terms, then find the common difference of the A.P.

The sum of n terms of an A.P.is 3n^(2)-n. Find the first term and common difference of A.P.

The sum of the first 9 terms of an AP is 81 and that of its first 20 terms is 400. Find the first term and the common difference of the AP

The sum of the first 8 terms of an A.P. is 100 and the sum of its first 19 terms is 551. Find the first term and the common difference of the AP.

The sum of a series of terms in A.P. is 128. If the first term is 2 and the last term is 14, find the common difference.

If the first term of an A.P. is 100 and the sum of its first 6 terms is five times the sum of the next 6 terms then its common difference is

Find the sum of the first 22 terms of an AP whose first term is 4 and the common difference is (4)/(3) .

The first term of an A.P is 2 and last term is 59. Find the common difference if sum of all terms is 610 .