Best Answer

The prime factorization of 90 is 2 x 3² x 5.

There must be a 3 in one number and 3² in the other, and no other common prime factors; thus the number pair could be:

3 and 90

6 and 45

9 and 30

15 and 18

Q: What number pair has a GCF of 3 and a LCM of 90?

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3 and 90 15 and 18

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The set of (90,90) has a GCF and an LCM of 90.The set of (-90,-90) has a GCF and an LCM of 90.

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The GCF is 15. The LCM is 990.

The LCM is 90. The GCF is 9.

The GCF is: 15The LCM is: 990

The multiples of 15 are 15, 30, 45, 60, 75, 90 The LCM of 15 and 90 is 90. The factors of 15 are 1, 3, 5, 15 The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90 The GCF is 15.

The GCF of 10 & 18 is 2.The LCM of 10 & 18 is 90.

The GCF is 1.

6 and 90

15 and 90, respectively.