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All of these numbers are composite except for 2, which is prime.
Prime numbers are numbers that can only be divided evenly by 1 and itself.
Composite numbers can be divided evenly by 1, itself, and at least one more number.

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โˆ™ 2009-11-24 00:49:16
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Q: Which of these are composite numbers 4 6 2 8 18 15?
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4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30 are all the composite numbers below 30.


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Is 18 prime and composite?

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Are prime numbers greater than 2 composite?

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