For each positive integer k, let ak=(1+1k+1). Is the product

[BTGmoderatorDC]

For each positive integer k, let \(a_k = (1 + \frac{1}{k+1})\). Is the product \(a_1a_2 ... a_n\) an integer?

(1) n + 1 is a multiple of 3.
(2) n is a multiple of 2.


OA B

Source: Official Guide