Question

Q24. There are 60 students in a class among which 30 are boys. In another class there are 50 students among which 25 of them
are boys. If one from each class is selected, [2]

(b) What is the probability of having atleast one girl?

the answer of b) is 3/4 ............ how!?

pls ans fast

Answer 1

Hope it may help you....

Total students in first class ==> 60

Among which girls ==> 30

boys ==> 30

Total students in class 2 ==> 50

Among which no. of girls = no. of boys = 25....

So, we have 4 possible outcomes according to the question.....

1. Boy Girl
2. Girl Boy
3. Boy Boy
4. Girl Girl

Among the four outcomes the possibilities of getting a girl is 3...

Therefore, P(b) = 3/4

Hope it is right and helpful.....

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