# MATH

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10*9*8*7*6*5*4*3*2*1 = 10!
Can this be true?! Why or why not?

Im totally confused with this.

• MATH -

How can multiplying all of those numbers together only equal 10???

• MATH -

I think she means 10! or "ten factorial".

And yes, the math statement is true by definition.

• MATH -

Leo is correct.
! following a number is the mathematical "factorial" symbol, NOT an exclamation point.

It appears often in probability equations.

4! = 1*2*3*4 = 24, for example.

• MATH -

Thanks, drwls.

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