CariMotten CariMotten

02-08-2015
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Explain why numbers with a 5 in the ones place are not prime numbers

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RedRicin RedRicin

02-08-2015

If it has a five in the ones place, then it is divisible by 5.
If it is divisible by a number besides 1 or itself, it is not prime.
*exception: 5 is a prime

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