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Most important question class 10 chapter 4 Quadratic equation

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In a class two third students are boys and remaining are girls. The probability of getting first class by a boy is 0.30 and the probability of getting first class by a girl is 0.24. The probability of getting first class by a randomly selected student is:

Family has 9 girls, Probability of son at 10th birth is :-

Differentiation most important question

If 2/(11) is the probability of an event, what is the probability of the event not A

Two thirds of eth students in a class are boys and the rest girls. It is known that eh probability of a girl getting a first class is 0.25 and that of a boy getting a first class is 0.28. find the probability that a student chosen at random will get first class marks in the subject.

Two thirds of the students in a class are boys and the rest girls. It is known that the probability of a girl getting a first class is 0.25 and that of a boy getting a first class is 0.28. find the probability that a student chosen at random will get first class marks in the subject.