A piggy bank contains hundred 50-p coins, seventy 1 coin, fifty 32
coins and thirty 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 1 coin? (ii) will not be a 5 coin (iii) will be
50-p or a 2 coin.?
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Answer:
Total coins = 100+70+30+50 = 250
a) no. Of 1coin = 70
Probability = 70/250
b) no. Of not a 5 coin = 100+70+50 = 220
Probability = 220/250
c) no of 50 p or 1coin = 100+70 = 170
Probability = 170/250
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