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July 30, 2014

July 30, 2014

Posted by **barbara** on Saturday, June 6, 2009 at 11:51am.

If a number is divisible by 3, then the sum of the digits of that number is divisible by 3.

The sum of the digits of a number is not divisible by 3. Therefore the number is not divisible by 3.

- teaching math -
**bobpursley**, Saturday, June 6, 2009 at 12:03pmsee other post.

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