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What is the greatest common factor of 18 and 30

User Ytpm
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6 is the greatest common factor of 18 and 30! Hope this helps!

User Maxim Salnikov
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find factors of 18 and 30
18=3 times 3 itmes 2
30=3 times 2 times 5
find the ones common to both
3 times 2 is common to both
3 times 2=6=greatest common factor
User SKT
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