Question
If Ravi lies 4 out of 10 times and Vikram lies 6 out of 10
times, what is the probability that Ravi and Vikram will agree with each other?Solution
P(Ravi lies) = 4/10 = 2/5
P(Vikram lies) = 6/10 = 3/5
P(both agree) = P(both of them lie) + P(both of them tell the truth)
= (2/5)*(3/5) + (1 - 2/5)*(1 - 3/5)
= 12/25
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