Help with 5!

[princewalta]

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Is there any patterns for solving problems with 5!, 10!/3!. I just dont think its smart to multiple 5x4x3x2x1. Also what if you get something harder like 10!. you dont want to multiple down to get the answer right, so can anyone help me find a short cut?

 

[DrTacoElf]

Is there any patterns for solving problems with 5!, 10!/3!. I just dont think its smart to multiple 5x4x3x2x1. Also what if you get something harder like 10!. you dont want to multiple down to get the answer right, so can anyone help me find a short cut?

well 10!/3! would be equivalent to 10*9*8*7*6*5*4

thats about all you can do.

 

[HBomb]

Agreed. This is about all you can do.