Question

Let S1 , S2, S3 be the respective sums of first n, 2n and 3n
terms of the same arithmetic progression with a as the first
term and d as the common difference. If R = S3-S2-S1,
then R depends on
(a) a and d
(b) d and n
(c) a and n
(d) a, d and n​

Answer 1

Answer:

it will depend on a and d. because r= 0