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This month the focus is on probability and the puzzle for this month is one that all Maths teachers will probably (?) know the answer to. What is the minimum number of pupils there needs to be in a class such that the probability of two or more of them having the same birthday is greater than a half? If you don’t know have a guess (make an estimate).
Solutions to the Puzzle of the Month are available to subscribers only.
For many more mathematical puzzles visit the Transum Puzzles page.
