Probability important question class 11

Most important question class 10 chapter 4 Quadratic equation

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Differentiation most important question

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:

Refer to Example 5, Section 14.4, Chapter 14. Find the probability that a student of the class was born in August.

In a particular section of class IX, 40 students were asked about the month of their birth and the following graph was prepared for the data so obtained. Find the probability that a student of the class was born in August.

How are polymers classified according to their structure? Give important features of each class. Also give two examples of each class.

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.