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A and B are independent witness. Probability that A speaks truth is x and y of B if A agree with B for any statement, then prove that probability of the truth of statement will be xy/(1 – x + 2xy).

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5 The prob. that A speaks truth

P(A) = x

Probability that B speaks truth

P(B) = y

If both are agree with any statement then, prob. that statement is true

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