The factors of 7 are 1 & 7. The factors of 9 are 1, 3 & 9.
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None. 7 and 9 haveno common factors other than 1.Factors of 7: 1, 7Factors of 9: 1, 3, 9
They are 7 and 17 because they have only two factors
63/9 = 7 and 63/7 = 9 So, yes they factors of 63.
The LCM of 9 and 7 is 63 (9 * 7 = 63). There are plenty of other numbers that 9 and 7 divide evenly into though.
9 and 15 are composite numbers because they have more than two factors