1.

For any two positive integer n, prove that (n³-n) is divisible by 6​

Answer»

Step-by-step explanation:

Whenever a NUMBER is DIVIDED by 3, the REMAINDER OBTAINED is either 0 or 1 or 2. ... ∴ n = 2q or 2q + 1, where q is some integer. If n = 2q, then n is DIVISIBLE by 2.



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