If in an A.P, `S_n=n^2p` and `S_m=m^2p`, then `S_p` is equal to

If in an A.P.S_(n)=n^(2)p and S_(m)=m^(2)p, then S_(p) is equal to

If in an A.P., S_n=n^2p and S_m=m^2p , where S_r denotes the sum of r terms of the A.P., then S_p is equal to 1/2p^3 (b) m n\ p (c) p^3 (d) (m+n)p^2

Let S_(n) denote the sum of the first n terms of an A.P.. If S_(4)=16 and S_(6)=-48, then S_(10) is equal to :

If in an A.P.S_(n)=n^(2)q and S_(m)=m^(2)q, where S_(r) denotes the sum of r terms of the A.P.then S_(q) equals (q^(3))/(2) b.mnq c.q^(3) d.(m^(2)+n^(2))q

In an AP,S_(p)=q,S_(q)=p. Then S_(p+q) is equal to :

S_(n) denote the sum of the first n terms of an A.P. If S_(2n)=3S_(n) , then S_(3n):S_(n) is equal to

Let S_(n) denote the sum of the first n terms of an A.P.. If S_(4)=16 and S_(6)=-48 , then (S_(10))/(-80) is equal to ____________.

If in A.P, S_n=n^2+2n then find common difference d

Let S_(n) denotes the sum to terms of an A.P. whose first term is a . If the commom difference d is given by d = S_(n) - kS_(n-1) + S_(n-2) , then k is equal to

If S_n denotes the sum of first n terms of an A.P. and S_5:S_10=7:15 "and" S_10=390 Then S_15-S_5 is equal to