Homework Help: probability

Posted by drek on Tuesday, August 21, 2012 at 7:10pm.

A box contains 4 purple and 9 yellow balls.We take out 2 balls (with replacement). What is the probability of drawing a second ball yellow, if the first ball was purple? please sovle in details..thanks

probability - Ms. Sue, Tuesday, August 21, 2012 at 7:37pm
You still have the probability of 9/13 in drawing a yellow ball.

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