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Cynthia has 3 gray, 3 blue and 6 pink marbles in a bag. Cynthia draws one marble randomly, writes down the color and puts it back. Cynthia repeats the process one more time. What is the probability that Cynthia selected a pink marble each time?
$\dfrac{1}{12}$
$\dfrac{3}{4}$
$0$
$\dfrac{1}{4}$
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