In a game 3 coins are tossed. A person is paid Rs. 5, if he gets all head or all tail and be in supposed pay Rs. 3 if he gets are head or 2 heads. What can be expert to win on an arrange per game.

Explanation

Let X be the amount received by the person. Then, X can take values 5 and -3 such that

P(X=5)= Probability of getting all heads or all tails when three coins are tossed


`P(X=5)=frac{2}{8}=frac{1}{4}`


P(X=-3)= Probability of getting one or two heads


`P(X=-3)=frac{6}{8}=frac{3}{4}`

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