If $\dfrac{1^{3} + 2^{3} + 3^{3} + \cdots + n^{3}}{1 + 2 + 3 + \cdots + n} = 210$, the value of $n$ is —

Question

Accepted Answer

$20$

Answer

$21$

Answer

$19$

Answer

$22$

If 13+23+33+⋯+n31+2+3+⋯+n=210\dfrac{1^{3} + 2^{3} + 3^{3} + \cdots + n^{3}}{1 + 2 + 3 + \cdots + n} = 2101+2+3+⋯+n13+23+33+⋯​=210, the value of nnn is —