Thursday, December 11, 2008

Throwing Darts at a Spinning Sphere?

Michael George who passed on the homicidal necrophobe problem sent me another good one.

There's a game in which darts are thrown from various angles into a spinning sphere (in other words, they land randomly). Three darts are thrown. If you get them all in the same hemisphere, you win. What's the probability of winning?

pic by wili hybrid

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