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Mathematics 15 Online
OpenStudy (anonymous):

are all odd numbers are prime?

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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