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26 December, 01:50

A box contains 5 red marbles and 7 green marbles. Find the probability of drawing 2 red marbles:

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  1. 26 December, 02:15
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    5/33

    Step-by-step explanation:

    5/12 * 4/11 = 20 / 132 = 10 / 66 = 5 / 33

    The probability of drawing a red marble on the first try is 5/12 because there are 5 red marbles and 12 marbles in total. The second time you only have 4 red marbles left and 11 marbles left in total. Multiply them to find the probability of drawing 2 red marbles in a row.
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