3) Number series

Find the missing number in the series:
-1,2,7,28,__.
(A) 36 (B) 54 (C) 63 (D) 71

Answer: C
Description:
Logic behind the series is
(0^3-1),(1^3+1),(2^3-1),(3^3+1),(4^3-1)
hence the answer is
#63#