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1. First, break down both 20 and 36 into their prime factors. 2. For 20, the prime factors are 2 x 2 x 5. For 36, the prime factors are 2 x 2 x 3 x 3. 3. Then look at the two lists of prime factors and find the largest factors that are shared between both numbers. In this case, it would be 2 x 2, whRead more
1. First, break down both 20 and 36 into their prime factors.
2. For 20, the prime factors are 2 x 2 x 5. For 36, the prime factors are 2 x 2 x 3 x 3.
3. Then look at the two lists of prime factors and find the largest factors that are shared between both numbers. In this case, it would be 2 x 2, which equals 4.
Therefore, the greatest common factor (GCF) of 20 and 36 is 4.
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