Question

Q :- In class 10A there are 30 boys and 20 girls. In 10B, there are 15 boys and 25. girls one student it is to be selected from Each class.

1 :- what is the probability of both being girls?
2 :- what is the probability of both being boys?
3 :- what is the probability of one boy and one girl?
4 :- what is the probability of at least one boy?​

Answer 1

1. 45/90
2. 45/90
3. 1/90
4. 1/90

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