The factors of 35 are:
1, 5, 7, 35
The factors of 63 are:
1, 3, 7, 9, 21, 63
The factors of 72 are:
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
The Greatest Common Factor (GCF) is:
1
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The GCF of 35 and 63 is 7.The GCF is 7.The GCF is: 77
The GCF of 21, 35, and 63 is 7.
The GCF of 15, 24, and 72 is 3. There is no GCF for 63, 20, and 50. This makes it relatively prime.
The GCF is 9.
The GCF is 7.