Elastic Numbers

It’s here! My new book of puzzles Elastic Numbers is now available on Amazon.

https://www.amazon.co.uk/Elastic-Numbers-Puzzles-Serious-Problem/dp/0995782601

https://www.amazon.com/gp/aw/d/0995782601

Elastic Numbers Cover

I hope you enjoy solving the problems as much as I enjoyed creating them.

 

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The Mathlon

From the 1986 Canadian Maths Olympiad:

A, B and C are the participants in a Mathlon – an athletics competition made up of several events. In each event x points are awarded for finishing 1st, y points for finishing 2nd, and z points for finishing 3rd, where x>y>z are positive integers. In the end, A scored 22 points, and B and C each scored 9 points. B won the 100 metres. How many events were there in total, and who finished second in the high jump?

Solution