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Today Puzzle #595

Puzzle No. 595 – Wednesday 23 October

In a slightly simplified version of Rugby Union, a try is worth 7 points and a penalty 3 points. There is no other way to score points. What is the highest score that cannot be achieved?

Today’s #PuzzleForToday has been set by Kyle Evans an award winning maths communicator and director of maths at Barton Peveril College

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11 points. 11 is the Frobenius number for 7 and 3. It can be calculated by doing (7*3)-(7+3).

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