What should come at the place of question mark (?) in the following number series?
-1, 2, 7, 14, 23, ?

Correct Answer: (B) 34

The differences between consecutive terms form an arithmetic progression of odd numbers: $2 - (-1) = 3$, $7 - 2 = 5$, $14 - 7 = 7$, and $23 - 14 = 9$. Following this pattern, the next difference must be $11$, so the missing number is $23 + 11 = 34$.