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Q: Is 39 42 and 72 relatively prime?

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The greatest common factor of 39, 42, and 72 is 3

Yes.

Factors of 42 include: 1 & 42, 2 & 11, 3 & 14, and 6 & 7. For these factors, 1, 2, 11, 3 and 7 are prime. Factors of 72 include: 1 & 72, 2 & 36, 3 & 24, 4 & 18, 6 & 12, and 8 & 9. For these factors, 1 and 3 are prime. Factors of 84 include: 1 & 84, 2 & 42, 3 & 28, 4 & 21, 6 & 14, and 7 & 12. For these factors, 1, 3 and 7 are prime.

what is the prime factorization of 72 with examples

9 is not prime, so it is not a prime factor of 72, great or otherwise.

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No they have common factor of 3

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they are not relatively prime

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55 and 72 are relatively prime because they have no prime factors in common.

The greatest common factor of 39, 42, and 72 is 3

72 and 115 are relatively prime, having no common factors greater than 1.

No.

No.

72

Yes.

Yes.

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