$1^2+2^2+3^2+\dots+n^2$ এর মান কোনটি?

Question

Accepted Answer

$\dfrac{n(n+1)(2n+1)}{6}$

Answer

$\dfrac{n(n+1)}{2}$

Answer

$\left[\dfrac{n(n+1)}{2}\right]^2$

Answer

$\dfrac{n(2n+1)}{3}$

12+22+32+⋯+n21^2+2^2+3^2+\dots+n^212+22+32+⋯+n2 এর মান কোনটি?