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A Prime number is a number that can only be divided by 1 and itself. While 5 can only be divided by 1 and 5, 9 can be divided by 1, 9 and 3. So 9 is not a prime number, 5 is.

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โˆ™ 2012-10-04 03:34:21
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Q: Is 5 or 9 prime
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