Mathematics

Mathematics

Problem

A fair coin is tossed twice. You earn Rs 3 for every head that appears and nothing for a tail. After observing that the first toss is a head, what is your expected total earning from the two tosses? a) Rs 3\text{Rs }3 b) Rs 6\text{Rs }6 c) Rs 4.5\text{Rs }4.5 d) Rs 3.5\text{Rs }3.5

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