plzzz anwers this questin plzzz
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I don't know what's GCD?? ?? ?? ?? ??
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Answer: 42
Step-by-step explanation:
- the prime factors of 210 are 7, 5, 3, 2
- the prime factors of 294 are 7, 7, 3, 2
- the prime factors of 378 are 7, 3, 3, 3, 2
they all have 7, 3, 2 in common so 7 X 2 X 3 = 42
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