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Hole Mug: Extreme Utilities Puzzle

Hole Mug: Extreme Utilities Puzzle

How many holes does this mug have? This question has caused much debate in the Maths Gear team!In topology, a mug...

£23.99

Signed copy of So You Think You've Got Problems? by Alex Bellos - Due to high demand your order will be shipped after 13th November

Signed copy of So You Think You've Got Problems? by Alex Bellos - Due to high demand your order will be shipped after 13th November

Due to high demand your order will be shipped after 13th November Can you beat the Guardian's puzzle-master, Alex Bellos?...

£13.99