Take a couple of coins -- 5 dollar and 2 dollar (any two similar coins of
18 mm. and 25 mm. in diameter will do).
Then, on a sheet of paper, cut out a circle equal to the circumference of the 2 dollar coin.
Do you think the 5-dollar coin will get through this hole?
There is no catch to the problem; it is genuinely geometrical.
Sunday, June 1, 2008
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