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Earn +20 ptsQ: What is the greatest common factor of 16 and 21?
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What is the least common factor of 16 and 21?
The factors of 16 are 1, 2, 4, 8, and 16. The factors of 21 are 1, 3, 7, and 21. The only common factor is 1; they are relatively prime. The least (or lowest) common factor is 1. The greatest (or highest) common factor is 1.
What is the greatest common factor of 21 and 75?
The greatest common factor of 21 and 75 is 3.
What is the greatest common factor of 21 and 322?
The greatest common factor of 21 and 322 is 7.
What is the greatest common factor of 105 and 147?
The greatest common factor of 105 and 147 is 21
What are the common factors and greatest common factor of 21 and 42?
The common factors of 21 and 42 are 3, 7 and 21. The greatest common factor (GCF) is 21.
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