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19 July, 01:30

A jar contains five blue marbles and four red marbles. suppose you choose a marble at random, and do not replace it. Then you choose a second marble. Find the probability of the following event: Both selected marbles are red.

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  1. 19 July, 05:23
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    We know there are a total of 9 marbles in the bag. If we draw one and don't replace it, there are 8 marbles left in the bag during our second choice ...

    we have 4/9 for our first draw and 3/8 for our second draw ... multiplied together, we have a 1/6 chance of drawing a red marble and another red marble without replacing any after each draw.
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