Question 10

A piggy bank contains one hundred 50 p coins, fifty $\text{₹}1$ coins, twenty $\text{₹}2$ coins and ten $\text{₹}5$ coins. If it is equally likely that one of the coins will fall out when the bank is turned upside down, what is the probability that the coin (i) will be a 50 p coin? (ii) will not be a $\text{₹}5$ coin?