Answer:
21
Step-by-step explanation:
The factors of 21 are: 1, 3, 7, 21
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42
Then the greatest common factor is 21.
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Answers & Comments
Answer:
21
Step-by-step explanation:
The factors of 21 are: 1, 3, 7, 21
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42
Then the greatest common factor is 21.