2. A bag contains 102 coins, 15 75 coins, and 20 10 coins. If a coin is taken out without looking into the bag, find the probability that:
a. it is a 5 coin
b. it is not a 10 coin
c. it is either a 2 coin or a 10 coin
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for example
A bag contains 15 one rupee coins, 25 two rupee coins and 10 five rupee coins. If a coin is selected at random from the bag, then the probability of not selecting a one rupee coin is
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