ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Mathematics Induction and Binomial Theorem

Question:
If n is any positive integer, then 1² + 2² + 3² + ……+ n² =

Option A):
n(n+1)(2n+1)/3
Option B):
(n+1)(2n+1)/6
Option C):
n(n+1)(2n+1)/6
Option D):
n(n+1)(2n+1)/2

Correct Answer is Option C):
n(n+1)(2n+1)/6