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28 March, 09:30

A pen holder contains 12 identical pens, 6 of which do not write. a child randomly selects a pen, replaces it, and selects again. find the probability that both pens do not write. (enter your probability as a fraction.)

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  1. 28 March, 11:26
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    Total pens = 12

    Pens that do not write = 6

    P (both pens that do not write) = (6/12) (6/12) = 1/4

    Answer: The probability that both cannot write is 1/4
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