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What is the greatest common factor of 20 and 150

Guest Jun 1, 2017
 #1
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To figure out this problem, list the factors of both 20 and 150 and see which number appears twice in both lists. Ordering them from least to greatest makes it simpler:

 

Number Factors of Number
20 1, 2, 4, 5, 10, 20
150 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150

 

I have bolded the numbers that appear twice in the list. Those are the common factors. However, the question asks for the greatest one. Which one is greatest? 10! 10 is the greatest. That's your answer!

 

The GCF (greatest common factor) of 20 and 150 is 10!

TheXSquaredFactor  Jun 1, 2017
edited by TheXSquaredFactor  Jun 1, 2017
 #2
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never mind i got it

Guest Jun 1, 2017

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