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# The greatest common factor of two numbers is 5!. Which of the followin

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Re: The greatest common factor of two numbers is 5!. Which of the followin [#permalink]
1
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GCF is the product of common factors of the numbers involved.

GCF = 5!

a = 8! = 8*7*6*5!

b will certainly have 5! and cannot have any more common factors with a (as this will increase the GCF)

Looking at the answers only 5 (5!) and 8! will have GCF as 5!

Ans C
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Re: The greatest common factor of two numbers is 5!. Which of the followin [#permalink]
ans is C..
8! can be written as 5!*6*7*8 so other given choices will increase the common factor and 5!*5 will keep GCF as 5!
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Re: The greatest common factor of two numbers is 5!. Which of the followin [#permalink]
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Re: The greatest common factor of two numbers is 5!. Which of the followin [#permalink]
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