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In a competitive examination, an examinee either guesses or copies or knows the answer to amultiple choice question with four choices. The probability that he makes a guess is `1/3` and the probability that he copies the answer is 1/6. The probability that the answer is correct, given that he copiedit, is `1/8`. Find the probability that he knows the answer to the question, given that he correctly answered

A

`24/29`

B

`1/4`

C

`3/4`

D

`1/2`

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The correct Answer is:
A
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