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How to Use FACTDOUBLE Function

The FACTDOUBLE function returns the double factorial of a number.

Formula:

=FACTDOUBLE(number)

Explanations:

The number is required, which is the value that returns the double factorial.

Cautions:

If number is even, FACTDOUBLE equation: n!! = n(n-2)(n-4)…(4)(2).

If number is odd, FACTDOUBLE equation: n!! = n(n-2)(n-4)…(3)(1).

Download: FACTDOUBLE Function

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