Find the common difference of an AP whose first term is 1 and the sum of the first four terms is one-third to the sum of the next four terms.

Find the common difference of an AP whose first term is 1and the sum of the first four terms is one-third to the sum of the next four terms.

Find the common difference of an A.P. whose first term is 5 and the sum of its first four terms is half the sum of the next four terms.

Find the common difference of an A.P. whose first term is 5 and the sum of its first four terms is half the sum of the next four terms.

Find the common difference of an A.P. whose first term is 5 and the sum of its first four terms is half the sum of the next four terms.

Find the common difference of an A.P.whose first term is 5 and the sum of its first four terms is half the sum of the next four terms.

Find the common difference of an A.P. whose first term is 100 and the sum of whose first six terms is five times the sum of the next six terms.

Find the common difference of an AP,whose first term is 100 and the sum of whose first six terms is five xx the sum of the next six terms.

In an AP, the first term is 2 and the sum of the first five terms is one fourth the sum of the next five terms. Find the 20^th term.

In an AP, the first term is 2 and the sum of the first five terms is one fourth the sum of the next five terms. Find the common dfference.

Find the common difference of an AP whose first term is 4, last term is 49 and sum of all terms 265.