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

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10,20

They could be 12 and 18

No need to answer it anymore.

12 and 16

52 is composite. You need at least two numbers to find a GCF.

Not necessarily.

One

Not necessarily.

12 and 16

Any two coprime numbers

The GCF of 6 and 10 is 2.

the two smallest numbers are 49 and 14

Any two composite numbers who do not share the same prime factors.15 = 5x322 = 11x2So 15 and 22 have a GCF of 1

12 and 66

If the GCF of two composite numbers is 1, they are co-prime or relatively prime.

15 and 30

30 and 60

21 and 42.

4 and 9

Two numbers whose GCF is one are relatively prime or co-prime

4 and 8

20 and 100.GCF is 20, and LCM is 100.

4 and 8.

12 and 216

The GCF of any two numbers can only be one number: it cannot be 30 as well as 90.

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