Saturday, January 09, 2010

Ask Marilyn Wrong?

In today's Parade magazine's problem column, Ask Marilyn, she gives the mini problem of drawing two cards from four, two of which are aces and two of which are deuces. She suggests that the probability of drawing a pair of aces is one quarter, that the probability of drawing a pair of deuces is one quarter, and that the probability of drawing an ace and a deuce is one half. I get those probabilities as being one sixth, one sixth and two thirds.

I really begin to doubt her accuracy on questions of probability.

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