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Q: What are three composite numbers whose GCF is 1?

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4 and 9 have a GCF of 1

12 & 16

12 and 16

The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.

15, 30 and 45.

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10,20

4 and 9 have a GCF of 1

12 & 16

They could be 12 and 18

No need to answer it anymore.

They are all composite numbers whose GCF is 1

12 and 16

The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.

7, 14 and 21

15, 30 and 45.

16, 32 and 48

15, 30, 45

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