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40% of the students in a class are girls...

40% of the students in a class are girls. If 60% and 70% fo the boys and the girls respectively of the class pass a certain test, what is the probability that a randomly selected student from the class will have passed the test?

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The correct Answer is:
`(16)/(25)`
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CHHAYA PUBLICATION-PROBABILITY-SAMPLE QUESTIONS FOR COMPETITIVE EXAMS
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  6. For two events A and B , the correct statement is/ are -

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  8. If A,B and C are three independent events such that P(B) = (3)/(2)P(A)...

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  9. An ubiased die is thrown, getting an even number is 3 times the probab...

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