Question

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Answer 1

Out of 200 persons in the sample, those having atleast one dream are 200− those who had no dream, i.e. 200−36=164

Now, out of 164 people, those who belonged to group Y are 100−21=79 people.

⇒ probability that the person chosen belonged to Group Y becomes  

164/79

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Answer: The probability is 164/79.

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Answer 2

Answer:

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