In a group of 7 persons, 3 are swimmers. One person is picked up at random. Find the probability that he is a swimmer
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Given : In a group of 7 persons, 3 are swimmers. One person is picked up at random.
To Find : the probability that he is a swimmer
Solution:
Total Person = 7
Swimmer = 3
probability that randomly picked person is a swimmer = Number of Swimmers/ Total Person
= 3/7
probability that randomly picked person is a swimmer = 3/7
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