Mathematics · Probability
In a multiple-choice exam, a student works out the solution for 50% of the questions and guesses the rest. When guessing, the probability of being correct is 0.30. When working out the solution, the probability of being wrong is 0.10. If the answer to a particular question is correct, what is the probability that the student guessed the answer?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.30
- 20.90
- 30.50
- 40.25✓
Correct answer
0.25
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