[" In an A.P,if common difference is "2," sum to n term "],[" is "49,7" th terms is "13" then "n=......----]

In an A.P., if common difference is 2, sum to n terms is 49, 7th term is 13, then n=

In an A.P., if common difference is 2, sum to n terms is 49, 7th term is 13, then n =

In an A.P.if common difference is 2, sum to n terms is 49,7 th term is 13, then n=

In an AP ,if common difference is 2 ,sum to n terms is 49 , 7th term is 13 ,then n=

Find the common difference if n^(th) term of AP is 7-4n.

In an A.P., if the first term is 22, the common difference is -4 and the sum to n terms is 64, find n .

In an A.P., if the first term is 22, the common difference is -4 and the sum to n terms is 64, find n .

If for every n in N , sum to n terms of an A.P. is 5n^(2)+7n then is 10th term is

Write the common difference of an A.P. the sum of whose first \ \ n terms is P/2n^2+Q n

If m times the mth term of an A.P. with non-zero common difference equals n times the nth term of the A.P., where m ne n , then (m+n)th term of this A.P. is