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Posted by on Sunday, March 24, 2013 at 9:35pm.

A urn contains 21 red balls, 14 white balls If we randomly select 2 balls, one after the other without replacement, what is the probability that both of the balls selected are red?

  • Statistic - , Monday, March 25, 2013 at 2:43pm

    If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

    21/35 * 20/34 = ?

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