probability

Class 9 | Full Chapter 15 | Probability | NCERT

Class 9 Chapter 15 | All Solutions | Probability

This playlist covers all the questions, concepts, theorems and examples of chapter 15 (Probability) of class 9, NCERT textbook. Every question, concept or example has been explained in a very creative manner and in layman’s language so that every student…

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Class 9 | Chapter 15 | Probability | Exercise 15.1 | Question 13

Question 13: In Q.1, Exercise 14.2, you were asked to prepare a frequency distribution table regarding the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at…

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Class 9 | Chapter 15 | Probability | Exercise 15.1 | Question 12

Question 12: In Q.5, Exercise 14.2, you were asked to prepare a frequency distribution table, regarding the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 days. Using this table, find the…

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Class 9 | Chapter 15 | Probability | Exercise 15.1 | Question 11

Question 11: Eleven bags of wheat flour, each marked 5kg, actually contained the following weights of flour (in kg): 4.97 5.05 5.08 5.03 5.00 5.06 5.08 4.98 5.04 5.07 5.00 Find the probability that any of these bags chosen at…

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Class 9 | Chapter 15 | Probability | Exercise 15.1 | Question 10

Question 10: Activity : Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3? Remember that…

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Class 9 | Chapter 15 | Probability | Exercise 15.1 | Question 9

Question 9: Activity : Note the frequency of two-wheelers, three-wheelers and four-wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is…

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Class 9 | Chapter 15 | Probability | Exercise 15.1 | Question 7

Question 7: To know the opinion of the students about the subject statistics, a survey of 200 students was conducted. The data is recorded in the following table. Find the probability that a student chosen at random (i) likes statistics,…

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