Posted by Kandace on Tuesday, April 19, 2011 at 9:55pm.
A box contains 2 blue marbles and 7 red marbles and two marbles are drawn with out replacement. The probability of not getting a red marble is

Math  PsyDAG, Wednesday, April 20, 2011 at 11:51am
P(2B) = 2/9 * 1/8 = ?
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