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January 30, 2015

January 30, 2015

Posted by **sarah** on Saturday, July 6, 2013 at 1:28am.

- math - help please -
**MathMate**, Saturday, July 6, 2013 at 6:35amUse the definition of conditional probability:

P(X9|9X) in the previous question.

P(X9∩9X)/P(9X)

=P(99)/P(9x)

=(4/52)*(3/51) / (4/52)

=3/51

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