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Consecutive Numbers

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

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Calendar Capers

Choose any three by three square of dates on a calendar page...

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Latin Numbers

Can you create a Latin Square from multiples of a six digit number?

Distinct Diagonals

Stage: 3 Short Challenge Level: Challenge Level:1
The most you can get is $10$, eg:

This problem is taken from the UKMT Mathematical Challenges.