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OpenStudy (anonymous):
are all odd numbers are prime?
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OpenStudy (crashonce):
no for exaample 1 is neither prime nor composite where as 9 is not prime
OpenStudy (crashonce):
Prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23 etc
OpenStudy (anonymous):
Even Prime 2-------2 4 no 6 no 8 no So only 2 is matching
OpenStudy (rane):
Prime numbers have only and exactly 2 factors
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