Question

What is the greatest common factor of 20 and 36?

Answer 1

Answer: 4

Explanation:

The Greatest common factor is the largest factor that both numbers share, so find their factors,

Factors of 20: 1,2,4,5,10 and 20

Factors of 36: 1,2,3,4,6,9,12,18, and 30

The largest factor that both numbers share is 4

Answer 2

4

Explanation:

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