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AP EAMCET202423 May 2024Morning ShiftMathematicsProbabilityActual

The probability that A speaks truth is 75 % and the probability that B speaks truth is 80 % . The probability that they contradict each other when asked to speak on a fact is

Options

  1. A3 20
  2. B4 20
  3. C7 20
  4. D5 20

Correct answer

C. 7 20

Step-by-step solution

P(A)= 75 100 , P( A )= 25 100 aligned & P(B)= 80 100 , P( B )= 20 100 & aligned P( contradict ) & =P(A B )+P( A B) & = 75 100 20 100 + 80 100 25 100 = 7 20 aligned aligned

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