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29 December 2009
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Mind Games BBC Four

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Puzzle 1  

Wheels on Wheels

Imagine two wheels of exactly the same size touching each other. One of them is fixed but the other one can roll around the fixed wheel.

Question

How many complete rotations does it require for the one outer wheel to roll completely around the fixed wheel and back to the start?
 Answer

Puzzles from series two
 
1. Wheels on Wheels
2. Running from the Train
3. Olympic Medals
4. Flying the Banner
5. Ox and Plough
6. Hamlet
7. The Hungry Bookworm
8. The Poet
9. Phrase Code

Mind Games

 

 
LETTER BOX
The fast-moving anagrams game
  Letter Box
YOUR PUZZLES
A selection of the puzzles you've emailed
spiral staircase

BBC Links

Challenges from series three

Challenges from series two

What kind of thinker are you?

Challenges from GCSE Bitesize

Test your memory

External Link

Marcus du Sautoy's official website

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