Binomial Theorem And Its Simple Applications Question 146
Question: If ’n’ is a positive integer, then $ n^{3}+2n $ is divisible by
Options:
A) 3
B) 2
C) 6
D) 15
Show Answer
Answer:
Correct Answer: A
Solution:
For n = 1
$n^3 + 2n = 1^3 + 2 = 3$ which is divisible by 3
∴ $n^3 + 2n$ is divisibly by 3 for smallest positive integer
BETA
