No
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27 has only one prime factor: 3
No. Prime factors of 27: 3 3 3 Prime factors of 45: 3 3 5 Both have two factors of 3, so the greatest common factor is 9.
The prime factors of 12 are 2 and 3. The only prime factor of 27 is 3. The prime number that both 12 and 27 have as a factor is 3.
The greatest common factor of 33, 27 & 39 is 3.
No, they are not relatively prime. They both have 3 as a common factor. 15 = 5 x 3 27 = 3 x 3 x 3