Slapped!!

Algebra Level pending

The probability of a boy being slapped by the 1st girl is 2/3.Now,if he gets slapped by the 1st one then the probability of him being slapped by the 2nd girl standing next becomes 3/4.But if not,then the probability of being slapped by 2nd is 1/3.Then find the probability of him being slapped by the 2nd girl.(Consider that he can approach the 2nd only after approaching the 1st.)

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