Question

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.​

Answer 1

Step-by-step explanation:

This is a tricky question I need to think on it

Answer 2

Answer:

There are 20 boys and 15 girls

So there are 8 boys with prime roll no.

There are 11 girls with composite roll no.

Ther are 7 girls with even roll no.

So P is 8+7+11/35=26/35

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