AP EAPCET 17th May 2023 Shift 2 Solved Paper

In a test a student either guesses or copies or knows the answer to answer a multiple 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 his answer is correct, given that he copied it is 1∕8. The probability that he knew the answer to the question, given that he answered it correctly is