Ranked #1

Bags mix-up- Logic and Decision Trees
Bags mix-up- Logic and Decision Trees
Three bags contain 2 t-shirts or 2 hoodies or 1 hoodie and 1 t-shirt, and none are labelled correctly. Can you tell whic... Read more
24 Oct 2014
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7mins
Ranked #2

Medicine muddle - Encoding and Binary
Medicine muddle - Encoding and Binary
Given four bottles with indistinguishable liquid, one of which is a vital medicine, two containers and a test that can b... Read more
24 Oct 2014
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5mins
Ranked #3

Fix the Hotel Rooms - Topology
Fix the Hotel Rooms - Topology
By drawing on a piece of paper, can you connect three houses to three utilities (gas, electricity, water) without any of... Read more
24 Oct 2014
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5mins
Ranked #4

The Tiny Lift - Graphs
The Tiny Lift - Graphs
How can you get three people to the upper floor of the hotel if two of them can never be left alone?
24 Oct 2014
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12mins
Ranked #5

Planning the tour - Abstraction and Graph Theory
Planning the tour - Abstraction and Graph Theory
How do you construct a tour travelling between a number of different cities, but never using the same transport method b... Read more
24 Oct 2014
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7mins