If \(n\) is a positive integer, is \(n^3 - n\) divisible by \(4?\)

This topic has expert replies
Legendary Member
Posts: 2276
Joined: Sat Oct 14, 2017 6:10 am
Followed by:3 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

If \(n\) is a positive integer, is \(n^3 - n\) divisible by \(4?\)

(1) \(n = 2k + 1,\) where \(k\) is an integer.
(2) \(n^2 + n\) is divisible by \(6.\)

Answer: A

Source: Official Guide