Question
A piggy bank contains six 50 paise coins, nine Rs. 1 coin,
and twelve Rs. 2 coins. One of the coins from the piggy bank fell and got lost. Find the probability that the lost coin is not a Rs. 1 coin.Solution
Number of Rs. 1 coin = 9
Total number of coins = 6 + 9 + 12 = 27
So, the required probability = 1 – (9/27) = 2/3
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