# Thread: Factorial N

1. ## Factorial N

If Factorial( N ) * Factorial( N +2 ) = Factorial( 2N ), How to find Solution Set of N in the simplest way..Note: (nPr ans nCr may be included in the solution.)

Please I want a solution simple as much as possible as it's for a high school student.

Thanks in advance.

2. Originally Posted by islamdiaa
If Factorial( N ) * Factorial( N +2 ) = Factorial( 2N ), How to find Solution Set of N in the simplest way..Note: (nPr ans nCr may be included in the solution.)

Please I want a solution simple as much as possible as it's for a high school student.

Thanks in advance.
N = 3 is an obvious solution.