The base case for a recursive definition of the factorial of n is ______.
A)factorial (-1)
B)factorial (0)
C)factorial (1)
D)factorial (n - 1)

Question

Quizplus · Accepted Answer

Factorial is only defined for non-negative integers. The base case for a recursive definition of the factorial of n should therefore be the smallest non-negative integer, which is 0. The factorial of 0 is defined to be 1, so the base case is factorial(0).

The Base Case for a Recursive Definition of the Factorial