SOLUTION: A pen holder contains 14 identical pens, 4 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.

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Question 1150346: A pen holder contains 14 identical pens, 4 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.)

Answer by ikleyn(52915) About Me  (Show Source):
You can put this solution on YOUR website!
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    P = %284%2F14%29%2A%284%2F14%29 = %282%2F7%29%2A%282%2F7%29 = 4%2F49.    ANSWER