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Start learning 50% faster. Sign in nowP(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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