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September 23, 2014

September 23, 2014

Posted by **robyn** on Saturday, July 25, 2009 at 6:22pm.

- stastics -
**economyst**, Sunday, July 26, 2009 at 8:51pmIt took me a few minutes to realize this is a trick question. It is impossible to have exactly one CD in the wrong envelope. If a CD is in the wrong envelope, then there must be at least one other CD in a wrong envelope. So, the probability is zero.

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