If the sum of the first $n$ terms of a series is $n(n + 1)$, the sum of the first $10$ terms is —

Question

Accepted Answer

$110$

Answer

$100$

Answer

$120$

Answer

$90$

If the sum of the first nnn terms of a series is n(n+1)n(n + 1)n(n+1), the sum of the first 101010 terms is —