Question

Let S be the sum, P be the product and R be the sum of the reciprocals of 3 terms of a G.P. then P²R³ : S³ is equal to

A. 1 : 1

B. (common ratio)ⁿ : 1

C. (First term)²(Common ratio)²

D. None of these

Answer 1

Let, 3 terms of the G.P. be a\r, a, ar

S = a\r + a + ar