Chapter 15 · Class 9 CBSE · Free Worksheet PDF
Probability Sums for Class 9 — Free CBSE Worksheet PDF with Answers
Download a free printable probability worksheet for Class 9 CBSE with 30 practice questions covering basic probability, experimental probability, theoretical probability, and probability word problems. Includes complete answer key. CBSE-aligned for the 2025-26 syllabus.
Last updated: 5 May 2026
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30 questions (Easy + Medium + Hard) with answer key. Fresh set generated daily.
Sample Probability Sums for Class 9 — Practice Questions
Here are 8 sample probability sums from this Class 9 CBSE worksheet. Download the full PDF for all 30 questions with answers.
Q1.Which of the following statements correctly defines the experimental probability of an event E?
A.A) P(E) = (Total number of outcomes) / (Number of times E happened)
B.B) P(E) = (Number of times E happened) / (Total number of trials)
C.C) P(E) = (Number of favourable outcomes) / (Total number of possible outcomes)
D.D) P(E) = (Total number of trials) - (Number of times E happened)
Difficulty: Easy
Q2.Which of the following values cannot be the probability of an event?
A.A) 0.7
B.B) 1/2
C.C) 1.5
D.D) 0
Difficulty: Easy
Q3.If P(E) is the probability of an event E, what is the probability of the event 'not E'?
A.A) 1 - P(E)
B.B) 1 / P(E)
C.C) P(E)
D.D) 0
Difficulty: Easy
Q4.A coin is tossed 200 times. The outcomes are recorded as follows: Heads: 110 times, Tails: 90 times. What is the experimental probability of getting a Head?
A.A) 9/20
B.B) 11/20
C.C) 1/2
D.D) 11/9
Difficulty: Easy
Q5.A die is rolled 300 times and the outcomes are noted:
Outcome | 1 | 2 | 3 | 4 | 5 | 6
--------|---|---|---|---|---|---
Frequency | 50 | 45 | 55 | 60 | 40 | 50
What is the experimental probability of getting an outcome greater than 4?
Outcome | 1 | 2 | 3 | 4 | 5 | 6
--------|---|---|---|---|---|---
Frequency | 50 | 45 | 55 | 60 | 40 | 50
What is the experimental probability of getting an outcome greater than 4?
A.A) 1/6
B.B) 3/10
C.C) 1/3
D.D) 1/5
Difficulty: Easy
Q6.A survey was conducted on 200 students to find their favourite sport. The results are:
Sport | Cricket | Football | Badminton | Basketball | Tennis
------|---------|----------|-----------|------------|--------
Number of Students | 80 | 50 | 30 | 25 | 15
What is the experimental probability that a randomly chosen student likes Badminton?
Sport | Cricket | Football | Badminton | Basketball | Tennis
------|---------|----------|-----------|------------|--------
Number of Students | 80 | 50 | 30 | 25 | 15
What is the experimental probability that a randomly chosen student likes Badminton?
A.A) 3/20
B.B) 1/4
C.C) 3/10
D.D) 1/8
Difficulty: Easy
Q7.A student, Ravi, performed an experiment where he drew a card from a deck 50 times, replacing it each time. He found that a red card was drawn 35 times. He calculated the probability of drawing a red card as 7/10. His friend, Priya, said he made a mistake and the probability should be 1. Why might Priya think Ravi made a mistake?
A.A) Probability cannot be a fraction.
B.B) Probability cannot be less than 1.
C.C) Ravi should have considered that the deck has an equal number of red and black cards, so the probability must be 1/2.
D.D) Priya is incorrect; Ravi's calculation is correct based on the experimental data.
Difficulty: Easy
Q8.Two events, A and B, were observed in an experiment with 100 trials. Event A occurred 45 times, and Event B occurred 60 times. Which of the following statements is true?
A.A) Event A is more likely to occur than Event B.
B.B) Event B is more likely to occur than Event A.
C.C) Both events are equally likely.
D.D) It is impossible to compare their likelihoods with the given information.
Difficulty: Easy
Answer Key — Sample Questions+
Q1:B) P(E) = (Number of times E happened) / (Total number of trials)
Q2:C) 1.5
Q3:A) 1 - P(E)
Q4:B) 11/20
Q5:B) 3/10
Q6:A) 3/20
Q7:D) Priya is incorrect; Ravi's calculation is correct based on the experimental data.
Q8:B) Event B is more likely to occur than Event A.
Download the full PDF for all 30 answers with step-by-step solutions.
About This Worksheet
| Topic | Probability |
|---|---|
| Board | CBSE |
| Class | 9 |
| Total Questions | 30 (10 Easy + 10 Medium + 10 Hard) |
| Answer Key | Included |
| Price | Free |
Related Worksheets — Class 9 CBSE
Frequently Asked Questions
Where can I download free probability sums for Class 9?+
You can download a free Probability PDF worksheet for Class 9 CBSE right here on SparkEd. The worksheet includes 30 practice questions (basic probability, experimental probability, theoretical probability, and probability word problems) at easy, medium, and hard levels with a complete answer key.
How many probability questions are in this Class 9 worksheet?+
This SparkEd worksheet for Probability Class 9 contains 30 questions — 10 easy, 10 medium, and 10 hard. The questions cover basic probability, experimental probability, theoretical probability, and probability word problems. A fresh set is generated daily so students never repeat the same sheet.
Does the Probability worksheet for Class 9 include answers?+
Yes! Every SparkEd worksheet comes with a complete answer key. Students can self-check their work after completing the sheet. The PDF is free to download and print.
Is this probability worksheet aligned to CBSE syllabus?+
Yes. This worksheet is specifically designed for Class 9 CBSE students and aligned to the 2025-26 CBSE syllabus. All questions follow the CBSE exam pattern and difficulty level.
Can I print this Probability worksheet?+
Absolutely! The worksheet downloads as an A4-size PDF that is ready to print. It includes the questions, space for working, and a separate answer key — perfect for classroom use or home practice.
How is this worksheet different from NCERT textbook exercises?+
SparkEd worksheets go beyond NCERT exercises by providing 30 questions at 3 progressive difficulty levels. Level 1 (Easy) builds confidence, Level 2 (Medium) tests application, and Level 3 (Hard) prepares for exams. Each worksheet includes word problems and conceptual questions, not just computation.
Does this worksheet include probability word problems?+
Yes! The worksheet includes both computation-based questions and real-world word problems. Word problems are especially important for CBSE exams, and our worksheet covers a variety of scenarios to build problem-solving skills.
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