2 1 A coin is tossed twice and the four possible outcomes are assumed to be equally likely If A is the event both head and tail

Question

2 1 A coin is tossed twice and the four possible outcomes are assumed to be equally likely If A is the event both head and tail have appeared and B the event at most one de tail is observed then the value of P B A is 1 1 3 1 2 2 20 4 1 4 6

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