SOLUTION: What does ! mean? As in 5!. I heard it means down factoring. (5*4*3*2*1) or 120? Am I correct or wrong. If so what. Thanks.

SOLUTION: What does ! mean? As in 5!. I heard it means down factoring. (54321) or 120? Am I correct or wrong. If so what. Thanks.

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Question 526182: What does ! mean? As in 5!. I heard it means down factoring. (5*4*3*2*1) or 120? Am I correct or wrong. If so what. Thanks.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
5! is called "5 factorial", and it is 5*4*3*2*1 = 120
Not "down factoring", factorial.
Your calculator probably has a ! button.

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