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 will be a 50 p coin?

Answer 1

Total number of coins in a piggy bank = 100 + 50 + 20 + 10 = 180

∴ Total possible outcome = 180

For a 50 p coin:

Favourable outcomes = 100

∴ p (50 p) = `"Favourable outcomes"/"Total possible outcomes"=`

`= 100/180 `

`= 5/9`