What is the sum of 12 + 22 + 32 + ... + n2 ? - Vidyadip

MCQ

What is the sum of $12 + 22 + 32 + ... +\ n2\ ?$

✓
$\frac{\text{n}(\text{n+1)}(2\text{n+1)}}{2}$
B
$\frac{\text{n}(\text{n+1)}}{6}$
C
$\frac{\text{n}(\text{n+1}+2\text{n+1)}}{6}$
D
$\frac{\text{n}(\text{n+1)}(2\text{n+1)}}{3}$

✓

Answer

Correct option: A.

$\frac{\text{n}(\text{n+1)}(2\text{n+1)}}{2}$

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