In 4 throws of a pair of dice, what is the probability of throwing ...

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In 4 throws of a pair of dice, what is the probability of throwing doublets at least twice?
\( \mathrm{P} \)
W
(a) \( \frac{7}{36} \)
(b) \( \frac{17}{144} \)
(c) \( \frac{19}{144} \)
(d) none of these
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