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Probability

Bayes Theorem

Grade 12

Question:

<p>Bayes problem on knowing vs guessing answers.</p>

<p>5/7</p>

Step-by-Step Solution

Key Concept: Bayes formula with P(knows)=p.

<p>p = 5/7 solves (0.5*(1-p))/(p + 0.5*(1-p)) = 1/6.</p>

Correct Answer: C