Factorial

JavaScript Intermediate alien ages 11-13

The problem

The factorial of n (written n!) is 1 x 2 x 3 x ... x n. For example 5! = 5 x 4 x 3 x 2 x 1 = 120. Write a function factorial(n) that gives it back. 0! is 1.

You will practice: loops, multiplying, building up a result

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Factorial

The problem

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