Each week Integrated Learning posts a 700 level GMAT question on our blog and follows up with the answer the next day. Are you up for the challenge?
A jar has 10 marbles, either black or white. 2 marbles are randomly chosen simultaneously from the jar. If q is the probability that both will be black , is q > 1/3?
1) Less than ½ of the marbles in the jar are white.
2) The probability that 1 white marble and 1 black marble will be chosen together is 7/15.
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