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Earn +20 ptsQ: Is 15 a prime number why or why not?
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Is 15 a prime number of 45?
15 is a factor of 45, but it is not a prime number.
Is 2 and 15 prime or composite?
2 is a prime number and 15 is a composite number.
The number 3 and 5 are prime what of the the number 15?
3 and 5 are Prime Factors of 15 (3x5=15).
Is 5 and 15 prime numbers?
5 is but 15 is not a prime number
Which is not a prime number 13 15 17 19?
3 x 5 = 15, so 15 is not a prime number.
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