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Mathematics
Number Theory
Greatest Common Factor
What is the greatest common factor of 75, 8, and 21
1 answer
The prime factorization of 75 is 3 x 5 x 5. The prime factorization of 8 is 2 x 2 x 2. The prime factorization of 21 is 3 x 7. The only factor that all three numbers share is 1. Therefore, the greatest common factor is 1.
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