ProbabilityEasy
Question
The probability that A speaks truth is
, while this probability for B is
. The probability that they contradict each other when asked to speak on a fact is
, while this probability for B is
. The probability that they contradict each other when asked to speak on a fact isOptions
A.

B.

C.

D.

Solution
E1 : event denoting that A speaks truth
E2 : event denoting that B speaks truth
Probability that both contradicts each other =

E2 : event denoting that B speaks truth
Probability that both contradicts each other =


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