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If it is an even number and divides by 3. Ti find out if it divides by "3" let's take the number 450. It is even, but is it divisible by 3? Add up all of the numbers that make up the number, so 4+5+0, get rid of the zero, so 5+4 and then that is 9 so therefore that number is divisible by 3. Let's take the number 226. It is even, and its digits add up to 10, which is not divisible by 3, therefore it is not divisible by 6. Also, remember 2*3 is 6, and that is partly why this math works.

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15y ago

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