When writing factorials you would want to write (9!)! since 9!! is actually a di...

		splat on Feb 17, 2015 \| parent \| context \| favorite \| on: Who Can Name the Bigger Number? When writing factorials you would want to write (9!)! since 9!! is actually a different operation (the double factorial). 9!! = 9 x 7 x 5 x 3 x 1, so 9!! is less than 9!.