10. TBQ - Find the probabilty of the entry fee

In a game, the entry fee is \(Rs. 35\). The game consists of a tossing a coin 3 times. If one or two heads show, Maha gets her entry fee back. If she throws 3 heads, she receives double the entry fees. Otherwise she will lose. For tossing a coin three times, find the probability that she

1. loses the entry fee.

2. gets double entry fee.

3. just gets her entry fee.

 

 

The probability that she loses the entry fee is  $\frac{i}{i}$.