CBSE Class 9 Mathematics Probability Set E

Read and download the CBSE Class 9 Mathematics Probability Set E for the 2025-26 academic session. We have provided comprehensive Class 9 Mathematics school assignments that have important solved questions and answers for Chapter 15 Probability. These resources have been carefuly prepared by expert teachers as per the latest NCERT, CBSE, and KVS syllabus guidelines.

Solved Assignment for Class 9 Mathematics Chapter 15 Probability

Practicing these Class 9 Mathematics problems daily is must to improve your conceptual understanding and score better marks in school examinations. These printable assignments are a perfect assessment tool for Chapter 15 Probability, covering both basic and advanced level questions to help you get more marks in exams.

Chapter 15 Probability Class 9 Solved Questions and Answers

 

Question :  A teacher wanted to analyse the performance of two sections of students in a mathematics test of 100 marks. Looking at their performances, she found that a few students got under 20 marks and a few got 70 marks or above. So she decided to group them into intervals of varying sizes as follows: 0 − 20, 20 − 30… 60 − 70, 70 −100. Then she formed the following table:
D-8
(i) Find the probability that a student obtained less than 20 % in the mathematics test.
(ii) Find the probability that a student obtained marks 60 or above. 
Answer:
Totalnumber of students = 90
(i) Number of students getting less than 20 % marks in the test = 7
D-9
 
Question : 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.
 
D-10
Find the probability that a student chosen at random
(i)likes statistics, (ii) does not like it
Answer:
 
D-11
Question : The distance (in km) of 40 engineers from their residence to their place of work were found as follows.
5 3 10 20 25 11 13 7 12 31
19 10 12 17 18 11 32 17 16 2
7 9 7 8 3 5 12 15 18 3
12 14 2 9 6 15 15 7 6 12
What is the empirical probability that an engineer lives:
(i) less than 7 km from her place of work?
(ii) more than or equal to 7 km from her place of work?
(iii) within 1/2 km from her place of work?
Answer:  (i) Total number of engineers = 40
Number of engineers living less than 7 km from their place of work = 9
 
D-12
 
Question :  Eleven bags of wheat flour, each marked 5 kg, 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 random contains more than 5 kg of flour.
Answer:
Number of total bags = 11
Number of bags containing more than 5 kg of flour = 7
Hence, required probability,  P = 7/11 
 
 
Question :  
D-13
The above frequency distribution table represents the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 days. Using this table, find the probability of the concentration of sulphur dioxide in the interval 0.12 − 0.16 on any of these days.
Answer:  Number days for which the concentration of sulphur dioxide was in the interval of
0.12 − 0.16 = 2
Total number of days = 30
Hence, required probability, P =2/30 = 1/15
 
Question :  
Blood group   Number of students
A                           9
B                           6
AB                         3
O                          12
Total                      30
The above frequency distribution table represents the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.
Answer:
Number of students having blood group AB = 3
Total number of students = 30
Hence, required probability, P =3/30 = 1/10
 
 
 
 
More Assignments for Class 9 Mathematics
CBSE Class 9 Mathematics Collection of Assignments

CBSE Class 9 Mathematics Chapter 15 Probability Assignment

Access the latest Chapter 15 Probability assignments designed as per the current CBSE syllabus for Class 9. We have included all question types, including MCQs, short answer questions, and long-form problems relating to Chapter 15 Probability. You can easily download these assignments in PDF format for free. Our expert teachers have carefully looked at previous year exam patterns and have made sure that these questions help you prepare properly for your upcoming school tests.

Benefits of solving Assignments for Chapter 15 Probability

Practicing these Class 9 Mathematics assignments has many advantages for you:

  • Better Exam Scores: Regular practice will help you to understand Chapter 15 Probability properly and  you will be able to answer exam questions correctly.
  • Latest Exam Pattern: All questions are aligned as per the latest CBSE sample papers and marking schemes.
  • Huge Variety of Questions: These Chapter 15 Probability sets include Case Studies, objective questions, and various descriptive problems with answers.
  • Time Management: Solving these Chapter 15 Probability test papers daily will improve your speed and accuracy.

How to solve Mathematics Chapter 15 Probability Assignments effectively?

  1. Read the Chapter First: Start with the NCERT book for Class 9 Mathematics before attempting the assignment.
  2. Self-Assessment: Try solving the Chapter 15 Probability questions by yourself and then check the solutions provided by us.
  3. Use Supporting Material: Refer to our Revision Notes and Class 9 worksheets if you get stuck on any topic.
  4. Track Mistakes: Maintain a notebook for tricky concepts and revise them using our online MCQ tests.

Best Practices for Class 9 Mathematics Preparation

For the best results, solve one assignment for Chapter 15 Probability on daily basis. Using a timer while practicing will further improve your problem-solving skills and prepare you for the actual CBSE exam.

Where can I download the latest CBSE Class 9 Mathematics Chapter Chapter 15 Probability assignments?

You can download free PDF assignments for Class 9 Mathematics Chapter Chapter 15 Probability from StudiesToday.com. These practice sheets have been updated for the 2025-26 session covering all concepts from latest NCERT textbook.

Do these Mathematics Chapter Chapter 15 Probability assignments include solved questions?

Yes, our teachers have given solutions for all questions in the Class 9 Mathematics Chapter Chapter 15 Probability assignments. This will help you to understand step-by-step methodology to get full marks in school tests and exams.

Are the assignments for Class 9 Mathematics Chapter Chapter 15 Probability based on the 2026 exam pattern?

Yes. These assignments are designed as per the latest CBSE syllabus for 2026. We have included huge variety of question formats such as MCQs, Case-study based questions and important diagram-based problems found in Chapter Chapter 15 Probability.

How can practicing Chapter Chapter 15 Probability assignments help in Mathematics preparation?

Practicing topicw wise assignments will help Class 9 students understand every sub-topic of Chapter Chapter 15 Probability. Daily practice will improve speed, accuracy and answering competency-based questions.

Can I download Mathematics Chapter Chapter 15 Probability assignments for free on mobile?

Yes, all printable assignments for Class 9 Mathematics Chapter Chapter 15 Probability are available for free download in mobile-friendly PDF format.