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NCERT Solutions for Class 9 Maths Chapter 15 Probability

NCERT Solutions for Class 9 Maths Chapter 15 Probability include stepwise answers to all the exercise questions. Probability is the likelihood of the occurrence of an event. It is calculated by dividing the favourable number of outcomes by the total number of possible outcomes. The probability of an event lies between 0 and 1. The favourable outcomes can never be negative in probability. Class 9 students often find probability questions difficult because they are unable to understand the basic concept. Our online NCERT solutions will help you solidify your concepts and achieve full marks in this chapter. 

NCERT Solutions for Class 9 Maths Chapter 15 are prepared by askIITians Maths experts. These solutions are self-explanatory and include stepwise answers so that you can understand how to calculate probability correctly. Probability is an important chapter that will also be a part of your Maths syllabus in higher classes. So, you must understand it properly in Class 9. All these solutions are based on the latest syllabus and exam pattern given by CBSE for the academic year 2022. Download our NCERT Solutions for Class 9 Maths Probability right away and start learning. 

About NCERT Solutions for Class 9 Maths Chapter 15 Probability

Before you start solving the NCERT exercises for Chapter 15 Probability, here are a few important points that you must take care of. 

  • Probability: The likelihood of occurrence of an event.
  • Event: One or more outcomes of an experiment. 
  • Experiment: It is a repeatable procedure with a set of possible results. 
  • Trial: Doing a random experiment is called a trial. 
  • Outcome: A possible result of an experiment. 
  • Sample Space: All the possible outcomes of an experiment. 
  • Favourable Outcome: An event that produces the desired result or expected event is called a favourable outcome. 
  • Formula of Probability: Probability(Event) = Favourable Outcomes/Total Outcomes = x/n

Our NCERT Solutions for Class 9 Maths Chapter 15 Probability will help you understand how to use the above key points to solve the exercise questions. You will learn how to approach the questions and prepare yourself for your examination. Download our free NCERT online solutions today. 

Download NCERT Solutions for Class 9 Maths Chapter 15 Probability

NCERT textbook questions are very important for students. NCERT textbook for Class 9 Maths explains every concept in detail and forms a solid foundation for advanced concepts that you will study in Class 10. Chapter 15 Probability includes only one exercise with 13 questions. If you practice these questions carefully, you will prepare yourself for your exam easily. Just click on the link given below and check the NCERT solutions for Ex 15.1. 

Class 9 Maths Chapter 15 Ex 15.1 Solutions - 13 Questions  

NCERT Solutions for Class 9 Maths Chapter 15 Ex 15.1

Exercise 15.1 of NCERT Class 9 Maths Chapter 15 includes questions related to finding the probability of an event. We have provided stepwise solutions for every question so that you can solve this exercise on your own easily. Here’s what this exercise includes:

Question 1: You are given that a batswoman hits a boundary 6 times out of 30 balls she plays. You have to find the probability that she did not hit the boundary. 

Question 2: You are given a table that includes data about families with no girl child, one girl child and 2 girl children. You have to find the probability of a family with 2 girls, 1 girl and no girl. 

Question 3: You have to refer to Example 5 in Chapter 14 and find the probability that a student of the class was born in August.

Question 4: You are given a table with data about tossing three coins 200 times. The frequency of obtaining 3 heads, 2 heads, 1 head and no head is given in the table. You have to find the probability of 2 heads coming up.

Question 5: This is a complex question where you are given data about the number of vehicles in a family and their monthly income. You have to find the probability for different scenarios given to you. This question requires a lot of calculations. 

Question 6: This question is also based on a table given in Chapter 14. Here you have to find probability as per the given scenario. Our NCERT Solutions for Class 9 Maths include stepwise details of this question. 

Question 7: In this question, you are given details about the opinion of students on statistics. You have to find the probability that a student likes the subject and dislikes the subject respectively. 

Question 8: This question is based on exercise 14.2 question 2. You have to find empirical probability as per the given requirements. Many students get confused with empirical probability and probability. Check out our NCERT solutions and you will never get confused. 

Question 9: This is an activity in which you have to measure the frequency of two-wheelers, three-wheelers and four-wheelers going past during a time interval in front of your school gate. Then, you have to find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler. 

Question 10: This is also an activity that you need to perform in a group or your classroom. All of you have to choose a 3 digit number and find the probability that one of the numbers chosen randomly is divisible by 3. You can only solve this activity if the concept of probability is clear to you. Refer to our quick and easy revision notes for assistance. 

Question 11: In this question, you are given the weight of eleven different bags. You have to find the probability that the bag chosen out of these eleven weighs exactly 5 kg. 

Question 12: This question given in exercise 15.1 of NCERT Class 9 Maths book is based on exercise 14.2. You have to use the frequency table you prepared in question 5 to find out the probability of the concentration of sulphur dioxide in the interval 0.12 - 0.16 on any of the days.

Question 13: The last question of this exercise is also based on exercise 14.2. You have to use the frequency table prepared in question 1 to determine the probability that a student of this class, selected at random, has blood group AB. 

Why NCERT Solutions for Class 9 Maths Chapter 15 Probability are Important?

Easy Solutions: Instead of getting confused about how to solve different types of questions related to probability, just refer to our NCERT solutions. They are easy to understand and comprehensive, making it easier to understand how to solve NCERT exercises. 

Exam Preparation: You must prepare how to solve probability questions as per the latest CBSE exam pattern. Our NCERT solutions are exactly based on the current exam pattern so that you do not have to worry about exam preparation. 

Doubt Clearance: If you are having any doubts about solving probability questions, you can use our NCERT solutions online. These solutions will give you clarity on how to calculate probability in different scenarios. This way you do not have to rush anywhere to get your doubts cleared. 

Self-Paced Learning: You do not have just one study session to complete the whole exercise. Take your time and solve the exercise at your own pace. All the NCERT solutions are self-explanatory so that you can learn at any time and from anywhere. 

Concept Clarity: Many times students do not get a complete idea of how to solve probability questions. Our NCERT solutions will help in clarifying the concepts. So if you have by chance missed your probability class, just check out our NCERT solutions. 

NCERT Solutions for Class 9 Maths Chapter 15 Probability FAQs

  1. Should I practice all the questions given in NCERT Class 9 Maths Chapter 15? 

Yes, every question of exercise 15.1 is important for you. Not only this, but you must also practice the solved examples given in this chapter for better clarity of concepts. 

  1. I need further help in Probability. What should I do? 

AskIITians provide the best study resources at your fingertips so that you can learn from anywhere at your convenience. Our revision notes, sample papers, and previous year papers combined with free NCERT solutions will help you understand every concept clearly. You can also opt for our online live classes and learn directly from our experts. 

  1. Is the probability chapter important in Class 9? 

Yes, Chapter 15 Probability is an important chapter that students must learn in Class 9. This concept is further taught in higher classes so you must have clarity of what probability is. You must know what is an event, experiment, sample space, trial, outcome, etc. 


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