What will come at the place of question mark?
3, 10, 29, 66, ?, 218
Show answer & explanation
Correct answer: C
Explanation
\begin{align*} 1^3 + 2 &= 1 + 2 = 3 \\ 2^3 + 2 &= 8 + 2 = 10 \\ 3^3 + 2 &= 27 + 2 = 29 \\ 4^3 + 2 &= 64 + 2 = 70 \\ 5^3 + 2 &= 125 + 2 = \mathbf{143} \\ 6^3 + 2 &= 216 + 2 = 218 \end{align*}
Every term follows: n³ + 2