kai7714 kai7714
  • 15-01-2018
  • Mathematics
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what is 63 and 84 gcf

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TheAakash
TheAakash TheAakash
  • 15-01-2018
A GCF stands for the 'Greatest Common Factor' which means that "what's the highest number that has both 63 and 84 in its multiplication table?" 

The numbers that go into both 63 and 84 (excluding 1) are 3, 7, and 21. Since 21 is the highest, that's your answer. 
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