Consider the A.P. `50,48,46,44 ……. If S _(n)` denotes the sum to n terms of this A.R. then

Consider the A.P. 50,48,46,44 ……. If S _(n) denotes the sum to n terms of this A.P. then

If S_(n), denotes the sum of n terms of an A.P. then S_(n+3)-3S_(n+2)+3S_(n+1)-S_(n)=

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

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

in an A.PS_(4)=16,S_(6)=-48 (where S_(n) denotes the sum of first n term of A.P then S_(10) is equal to

If in an A.P. S_(n) = qn^(2) and S_(m) = qm^(2) , where S_(r ) denotes the sum of r terms of the A.P. , then S_(q) equals :

Consider the A.P. 18,15,12.... Find the sum to n terms of the A.P.

If S_n=n P+(n(n-1))/2Q ,w h e r eS_n denotes the sum of the first n terms of an A.P., then find the common difference.