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What is the greatest common factor of 75 90 and 60?

Updated: 8/20/2019
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Wiki User

12y ago

Best Answer

The greatest common factor is 15.

To determine the GCF then express each number in terms of prime factors.

60 = 2 x 2 x 3 x 5 = 22 x 3 x 5

75 = 3 x 5 x 5 = 3 x 52

90 = 2 x 3 x 3 x 5 = 2 x 32 x 5

The common factors for all three numbers are 3 and 5.

The Highest (Greatest) Common Factor is 3 x 5 = 15

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14y ago
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