An unbiased die is rolled until a number greater than \( \mathrm{P}...

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An unbiased die is rolled until a number greater than
\( \mathrm{P} \) 4 appears. The probability that an even number of

W trials are needed, is
(1) \( \frac{1}{2} \)
(2) \( \frac{2}{5} \)
(3) \( \frac{1}{5} \)
(4) \( \frac{2}{3} \)
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