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# 1. Divisibility by 2

A whole number is divisible by $$2$$ if and only if the digit in the $$1$$'s place is $$0,2,4,6,$$ or $$8.$$

Example: Which of $$124$$ and $$71$$ are divisible by 2?

Look at the one's place to see if the numbers are divisible by $$2.$$ The one's place in $$124$$ is $$4$$ so $$124$$ is divisible by $$2.$$ The one's place in $$71$$ is $$1$$ so $$71$$ is not divisible by $$2.$$

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