Which three factor pairs of 42 contain a factor that is a prime number?

The factor pairs of 42 are:

1. 1 and 42: 42 is not a prime number, but 1 is not considered a prime.
2. 2 and 21: 2 is a prime number.
3. 3 and 14: 3 is a prime number.
4. 6 and 7: 7 is a prime number.

Thus, the factor pairs that contain a prime number are 2 and 21, 3 and 14, and 6 and 7.

In summary, the three factor pairs that contain a prime number are:

– 2 and 21

– 3 and 14

– 6 and 7

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