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A whole number is even if it is divisble by two, or if the last number is even or a zero.

Basically, any number ending in 0, 2, 4, 6, or 8 is even. All of those numbers (except 0) are divisible by 2.

For example, I know immediately that 3947594234 is even because the last number, 4 (3947594234) is even. To prove it, all even numbers are divisible by 2, so divide it by 2 and it divides evenly into 1973797117.

The main thing to take away from my talking is:

Any whole number ending with 0, 2, 4, 6, or 8 is even.

or

Any whole number divisible by 2 is even.

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