UPSKILL MATH PLUS

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In a game, the entry fee is 150. The game consists of tossing a coin 3 times. Dhana bought a ticket for entry. If one or two heads shows she gets her entry fee back. If she throws 3 heads, she receives double the entry fees. Otherwise, she will lose.
 
Find the probability that she:
 
i) Gets double entry fee = ii

ii) Just gets her entry fee = ii

iii) Loses the entry fee = ii
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