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GCF and LCM of 21 and 8

User GerardJP
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Answer:

The greatest common factor (GCF) of 21 and 8 is 1, since the only common factor of these two numbers is 1. The least common multiple (LCM) of 21 and 8 is 168, which is the smallest number that is a multiple of both 21 and 8.

Explanation:

User Geoherna
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