Monday 31 August 2009

DAY 23
In what three sports does the winner cross the finish line backwards? Two are recognized competitive events, while the third is an informal game-type activity. (Credit: James F. Fixx in Solve It!)

Answers:

rowing, backstroke, and tug-of-war

DAY 24
Ten people, all wearing hats, were walking along a street when a sudden wind blew all their hats off. A helpful boy retrieved them and without asking which hat belonged to which person, handed each person a hat. What is the probability that exactly nine of the people received their own hats?

Answers:

The probability is zero. If nine people have their own hats, then the tenth must too.

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