1. The product of two odd numbers is 117.
What are they?
2. The difference between two square numbers is 5.
What are they?
3. The sum of three prime numbers is 17.
What are they?
4. The ratio of two even numbers is 9:4.
What are they?
Topics: Starter  Arithmetic  Number  Puzzles  Ratio
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1. 1 and 117 or 3 and 39 or 9 and 13 (and their negatives).
2. 4 and 9. Could there be any other solutions?
3. 2, 2 and 13 or 3, 3 and 11 or 3, 7 and 7 or 5, 5 and 7.
4. 18 and 8 or 36 and 16 or 54 and 24 or ...
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