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Halloween Day

Age 11 to 14 Short
Challenge Level

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?


If you liked this problem, here is an NRICH task that challenges you to use similar mathematical ideas.

This problem is taken from the UKMT Mathematical Challenges.
You can find more short problems, arranged by curriculum topic, in our short problems collection.
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
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