1.

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»

(d) 24

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

= 1 x 2 x 3 x 4 

= 24



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