10.(i) A piggy bank contains hundred 50p coins, fifty Rs 1 coins, twenty Rs 2 coins and ten Rs 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 will be a 50 p coin ?
Total number of coins in the piggy bank = 100+50+20+10 = 180
Let E be the event of getting a 50p coin.
Number of possible outcomes = 180
Number of outcomes favourable to event E = 100
Therefore, the probability of getting a 50p coin is