Question

Let S₁ (n) be the sum of first n terms of arithmetic progression 8, 12, 16, ... and let S₂ (n) be the sum of the first n terms of arithmetic progression 17, 19, 21, ... if for some value of n, S₁ (n) = S₂ (n), then this common sum is

(a) 216

(b) 260

(c) 200

(d) None of these

Answer 1

Answer is : (b) 260

Given,

∵ Common sum = 260