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Counting One's Marbles (Posted on 2008-02-18) Difficulty: 2 of 5
There are two closed boxes, filled with red and white marbles. One of the boxes is 2/3 red and the other is 2/3 white.

You're allowed to sample 5 marbles from the first box, and 30 from the second. As a result, you get 4 red and 1 white marble from the first box, and 20 red and 10 white from the second. Which is more likely to be the one with majority red marbles?

Assume the two boxes contain the same number of marbles.

See The Solution Submitted by Charlie    
Rating: 1.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Solution Comment 5 of 5 |
(In reply to Solution by Eric)

nicely shown, Eric !
  Posted by ThoughtProvoker on 2008-02-22 00:11:13

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