Hey calmo11.

What have you tried? (Hint: if 4 is a factor of something then you can write it as z = 4*y for some integers z,y).

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- Aug 20th 2013, 05:41 PM #1

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- Aug 20th 2013, 10:49 PM #2

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- Aug 21st 2013, 03:40 PM #3

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- Aug 21st 2013, 04:39 PM #4

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