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What is the greatest common factor of 45 165?

Updated: 8/20/2019
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12y ago

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The GCF is 15.

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12y ago
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Q: What is the greatest common factor of 45 165?
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What is the greatest common factor for 45 and 165?

The GCF is 15.


Greatest common factor of 165 and 45?

The GCF is 15.


What is the greatest common factor of 45 and 165?

Factors of 45 are 1, 3, 5, 9, 15 and 45.Factors of 165 are 1, 3, 5, 11, 15, 33, 55 and 165.It is clear that 15 is the greatest common factor.Alternate method:Expressing each number as the product of prime numbers can simplify the problem easily.Prime factorization of 45 = 3x3x5Prime factorization of 165 = 3x5x11.From the P.F. of both numbers it is clear that 3x5 = 15 is common.So, Greatest common factor is 15.the GCF is 15


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