FACTDOUBLE Function
The FACTDOUBLE () is a math and trig function which takes "number" as an argument and returns the double factorial of a number.
Formula:
=FACTDOUBLE(number)In the above syntax, number argument is the positive integer value that we want to calculate the double factorial of.
Video Tutorial:
Let us see how to find out the double factorial of a number with the help of the below video.