Formula for sum of 'n' terms in an AP = …………..

Derive the formula for sum of n terms of an AP.

Questions on Sum of n terms in A.P.

Questions on Sum of n terms in A.P.

Sum of n Terms of an A.P. | Examples

" If the sum of 'n' terms of an A.P is "cn^(2)",then the sum of cubes of these n terms is "

If the sum of m terms of an A.P, is equal to the sum of n terms of the A.P ., then the sum of (m + n) terms is

If the sum to 'n' terms of an A.P. is (4n^(2) -2n)/( 4) then the n^( th) term of the A.P. is

If in an AP,the sum of m terms is equal to n and sum of n terms is equal to m.Then prove that sum of (m+n) terms is -(m+n)

If the sum to 2n terms of an Ap 2,5,8,11 , …. is equal to the sum to n terms of an AP 57,59,61,63, …. , then n is equal to

If the sum of n terms of an A.P is (4n^(2)-3n)/(4) then ,n^(th) term of the A.P