" an AP is "1505

If the sum of first 75 terms of an AP is 2625, then the 38th term of the AP is

If the sum of first 75 terms of an AP is 2625, then the 38th term of an AP is

Suppose mth term of an A.P. is 1/n and nth term of the A.P. is 1/m. If rth term of the A.P. is 1, then r is equal to

If the sum of 4 terms of an AP is 36, then AM of the AP is:

In an A.P,the sum of m terms of an AP is n and sum of n terms of AP is m,then prove that sum of (m+n) terms of AP is-(m+n)

If the sum of 4 terms of an AP is 72 then find the AM of the AP

If the pth term of an A.P. is (2p+3), find the A.P.

If sum of first 20 terms of an A.P. is equal to sum of first 30 terms of the A.P. then sum of the first 50 terms of the A.P. is

If 7th term of an A.P. is 9 and 9th term of the A.P. is 7, then 20th term of the A.P. is