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What is the GCF of 15 and 60?

1 Answer

May 8, 2018

$15$ $15$

Explanation:

Prime factor of $60 = 2^{2} \times 3 \times 5$ $60=2^2xxcolor(red)(3)xxcolor(red)(5)$

Prime factor of $15 = 3 \times 5$ $15=color(red)(3)xxcolor(red)(5)$

The greatest common factor is the similar primes of both numbers multiplied.

GCF $= 3 \times 5 = 15$ $=color(red)(3)xxcolor(red)(5)=15$

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