If n is a whole number greater than 1, then n2 (n2 - 1) is always divisible by :
A. 8
B. 10
C. 12
D. 16
Answer: Option C
Solution (By Examveda Team)
Let N = n2 (n2 - 1) = n2 (n - 1) (n + 1)Then, n = 2
⇒ N = 22 × (2 - 1) (2 + 1)
= (4 × 1 × 3) = 12
Hence, the required number is 12
This Question Belongs to Arithmetic Ability >> Number System
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