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Halloween Day

Stage: 3 and 4 Short Challenge Level: Challenge Level:1

In a certain 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.
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