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Pattern of Islands

In how many distinct ways can six islands be joined by bridges so that each island can be reached from every other island...

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Only Connect

The graph represents a salesman’s area of activity with the shops that the salesman must visit each day. What route around the shops has the minimum total distance?

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Ding Dong Bell

The reader is invited to investigate changes (or permutations) in the ringing of church bells, illustrated by braid diagrams showing the order in which the bells are rung.

Konigsberg Plus

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

An extension to the famous Konigsberg problem that offers a chance to experiment with different conditions and to test some conjectures.