Question

A piggy bank contains hundred 50 p 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

(i) Will be a 50 p coin?

(ii) Will not be a Rs.5 coin?

Answer 1

Total number of coins in a piggy bank 

= 100 + 50 + 20 + 10 = 180

(i) Number of 50 p coins = 100