Question

A piggy bank contains hundred 50p coins, fifty 1 coins, twenty *2 coins and ten 25 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 (1) will be a 50 p coin? (i) will not be 15 coin?​

Answer 1

Answer:

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

i)P(50p coin) =

number of 50p coins/total number of coins

= 100/180

P(50p coin) = 5/9

ii) Number of 15rs coins = 0

Number of coins which are not 15rs=180

P(coin not being 15rs) = 0/180

= 0