1. The product of two odd numbers is 315.
What are they?
2. The difference between two square numbers is 16.
What are they?
3. The sum of three prime numbers is 13.
What are they?
4. The ratio of two even numbers is 11:3.
What are they?
Topics: Starter  Arithmetic  Number  Puzzles  Ratio
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Previous Day  This starter is for 4 June  Next Day
1. 1 and 315 or 3 and 105 or 5 and 63 or 7 and 45 or 9 and 35 or 15 and 21 (and their negatives).
2. 9 and 25. Could there be any other solutions?
3. 3, 3 and 7 or 3, 5 and 5.
4. 22 and 6 or 44 and 12 or 66 and 18 or ...
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