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Mathematics 4 Online
OpenStudy (bluemiku):

Is the number 15 prime or composite? A. prime B. composite

OpenStudy (jhannybean):

To find out whether a number is prime, you find all the factors of the number, if you're left with the number itself and 1, then it's a prime number. Composite numbers have more than two factors.

OpenStudy (bluemiku):

Thank You :)

OpenStudy (jhannybean):

no problem :)

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