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OpenStudy (bluemiku):
Is the number 15 prime or composite? A. prime B. composite
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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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