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Q: What are two numbers whose GCF is 21?

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You need at least two numbers to find a GCF. The GCF of 21 and 42 is 21.

7, 14 and 21

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The two numbers whose sum is 58 and whose difference is 16 are 21 and 37.

You need at least two numbers to find a GCF. If that's 21 and 25, the GCF is 1.

18 + 3 = 21 18 - 3 = 5 The two numbers are therefore 3 and 18.

The numbers are 20 and 21.

The GCF is 7.

You need at least two numbers to find a GCF. If that's 21, 24 and 27, the GCF is 3.

You need at least two numbers to find a GCF. If that's 21, 24 and 27, the GCF is 3.

The GCF of 9 and 21 is 3.

No not always as for example the GCF of 7 and 21 is 7

The GCF is 7.

The GCF is 3.

21 and 42 have a GCF of 21. 40 and 80 have a GCF of 40. The GCF of 21 and 40 is 1.

7 & 21

37 and 21

3 and 42 6 and 21

You need at least two numbers to find a GCF.For example:The GCF of 21 and 9 = 3The GCF of 21 and 28 = 7

The GCF is 3.

Three and Seven

You need at least two numbers to find a GCF.

You need at least two numbers to find a GCF.

You need at least two numbers to find a GCF.

You need at least two numbers to find a GCF.