What is the greatest common factor of 20 and 30


Asked by admin @ in Math viewed by 283 People


What is the greatest common factor of 20 and 30

Answered by admin @



Factors of 20 = 1 , 2 , 4 , 5 , 10 , 20.

Factors of 30 = 1 , 2 , 3 , 5 , 10 , 15 , 30.

Common factors of 20 and 30 = 1, 2 , 5 , 10

So 

The greatest common factor 20 and 30 is 10.



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