Alina and Joe are both thinking of the same positive number. Alina tells Joe that her number is a factor of 9, while he tells her that it is a factor of 12. If the number is not 1, what is it?
Question:
Alina and Joe are both thinking of the same positive number. Alina tells Joe that her number is a factor of 9, while he tells her that it is a factor of 12. If the number is not 1, what is it?
Answer:
Let's think step by step.

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Alina and Joe are both thinking of the same positive number. Alina tells Joe that her number is a factor of 9, while he tells her that it is a factor of 12. If the number is not 1, what is it?
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