Einsteins gåta skydds.qxd
09-01-26
16.39
Sida 1
J E R E M Y STA NG R O O M
the London School of Economics. He is currently the New Media Editor of The Philosophers’ Magazine, which he founded with Julian Baggini in 1997. He is the author or editor of numerous books, including The Little Book of Big Ideas: Philosophy and The Little Book of Big Ideas: Religion, and the co-author of Do You Think What You Think You Think?. He lives in Toronto.
Einstein’s riddle, a fiendishly clever little problem, requires the coolest application of logic and lateral thinking. But solving it is just the first of many challenges . . .
EINSTEINS GÅTA
JEREMY STANGROOM has a PhD from
Einstein devised a riddle when he was a child. He predicted that only 2 per cent of the world’s population would be able to solve it. Can you?
Here are some of the most mesmerizing conundrums ever conceived. Whether you’re pondering ‘The Librarian’s Dilemma’, puzzling over the ‘The Sleeping Beauty Problem’ or unravelling ‘The Gambler’s Mistake’, this book will exercise your grey cells and keep you guessing from beginning to end.
l o g i s k a p r o b l e m o c h h u v u d b ry s o m J E R E M Y STA N G RO O M
www.norstedts.se
EINSTEINS GÅTA h å l l e r h jä r na n i g å n g
Q: There are five houses painted five different colours. A person with a different nationality lives in each house. The five house owners each drink a certain type of beverage, play a certain sport and keep a certain pet. No owners have the same pet, play the same sport or drink the same beverage. THE FACTS
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
The Briton lives in the red house. The Swede keeps dogs as pets. The Dane drinks tea. The green house is on the left of the white house. The owner of the green house drinks coffee. The person who plays football rears birds. The owner of the yellow house plays baseball. The man living in the centre house drinks milk. The Norwegian lives in the first house. The man who plays volleyball lives next to the one who keeps cats. The man who keeps the horse lives next to the man who plays baseball. The owner who plays tennis drinks beer. The German plays hockey. The Norwegian lives next to the blue house. The man who plays volleyball has a neighbour who drinks water.
Who owns the fish?