Question

The greatest positive integer which divide n(n + 1) (n + 2) (n + 3) for all n ∈ N is: 

(a) 2 

(b) 6

(c) 20 

(d) 24

Answer 1

(d) 24

Put n = 1 in n(n + 1) (n + 2) (n + 3) 

= 1 x 2 x 3 x 4 

= 24