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Number theory Difficulty 1.1 Junior Find the answer Canada

Which of the following is not equal to a whole number?

Pick one

Solutions — 2

Solution 1

Since $\tfrac{60}{8}=60\div 8 = 7.5$ , then this choice is not equal to a whole number.

Note as well that $\frac{60}{12}=5$ , $\frac{60}{5}=12$ , $\frac{60}{4}=15$ , and $\frac{60}{3}=20$ are all whole numbers.

Solution 2

Since $\tfrac{60}{8}=60\div 8 = 7.5$ , then this choice is not equal to a whole number.

Note as well that $\frac{60}{12}=5$ , $\frac{60}{5}=12$ , $\frac{60}{4}=15$ , and $\frac{60}{3}=20$ are all whole numbers.

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.