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Puzzle for Today

Puzzle No. 28 - Wednesday August 9

One year, there were exactly four Tuesdays and exactly four Fridays in October.

On what day of the week did Halloween, October 31st, fall that year?

This puzzle is from the University of Cambridge’s NRICH project (http://nrich.maths.org), which promotes creative mathematical thinking and problem-solving, in collaboration with the UKMT.

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