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October 20, 2014

October 20, 2014

Posted by **Anonymous** on Monday, October 22, 2012 at 1:53am.

- math -
**Reiny**, Monday, October 22, 2012 at 8:59amtake prob that they are both different

first can be anything, the second must be one of the other 54

prob that they are both different = (1)(54/55) = 54/55

prob( they are NOT both different)

= prob(at least two are the same) = 1 - 54/55 = 1/55

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