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In a class of 35, students are numbered ...

In a class of 35, students are numbered from 1 to 35. The ratio of boys to girls is 4 : 3. The roll numbers of students begin with boys and end with girls. Find the probability that a student selected is either a boy with prime roll number or a girl with composite roll number or an even roll number.

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The correct Answer is:
`29/35`
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PREMIERS PUBLISHERS-STATISTICS AND PROBABILITY -SOLUTION TO EXERCISE 8.4
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