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30 November, 02:05

The number of chips of different colors in Rick's bag is shown below

3 red chips

11 green chips

7 yellow chips

Rick takes out a chip from the bag randomly without looking. He replaces the chip and then takes out another chip from the bag. What is the probability that Rick takes out a yellow chip in both draws?

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  1. 30 November, 02:26
    0
    1/9

    because there are 21 chips in the bag 7 of them are yellow so 7/21

    but you draw twice so you square it (7/21) ^2=1/9
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