An author writes a good book with a probability of \( 1 / 2 \). If ...

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An author writes a good book with a probability of \( 1 / 2 \). If it is good it is published with a probability of
\( \mathrm{P} \) \( 2 / 3 \). If it is not, it is published with a probability of \( 1 / 4 \). Find the probability that he will get atleast one book published if he writes two.
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