Class 9 Maths Chapter 7 – The Mathematics of Maybe: Introduction to Probability | Ganita Manjari
Chapter 7 – The Mathematics of Maybe: Introduction to Probability introduces probability as a way of measuring the likelihood of an event occurring. The chapter begins with familiar situations involving chance and uncertainty and develops the mathematical language used to describe these events.
Students explore different ways of measuring probability, including experimental probability and theoretical probability, and learn how to describe possible outcomes using sample spaces and events.
The chapter also introduces tree diagrams to list and visualise possible outcomes in multi-step random experiments.
Table of Contents
📅 Last Updated: August 2026
📘 Syllabus: Based on the latest CBSE Class 9 (2026–27) syllabus
✅ Updated Resources Include:
- Chapter-wise Study Notes
- Free PDF Downloads
- MCQs
Chapter Overview
| Information | Details |
|---|---|
| Class | 9 |
| Subject | Maths |
| Textbook | Ganita Manjari |
| Chapter | 7 |
| Chapter Title | The Mathematics of Maybe: Introduction to Probability |
| Academic Session | 2026–27 |
| Resources | Notes, Worksheets, Questions, Tests & Revision |
📝 What You'll Learn in This Chapter
- 🎲 Understand probability as a measure of the likelihood of an event.
- 🔮 Describe events as impossible, less likely, equally likely, more likely or certain.
- 📊 Understand the probability scale from 0 to 1.
- 🧪 Explore experimental probability using data collected from repeated trials.
- 📐 Understand theoretical probability for equally likely outcomes.
- 🔢 Calculate probability using favourable and possible outcomes.
- 📋 Understand and construct a sample space.
- 🎯 Understand an event as a subset of a sample space.
- 🌳 Use tree diagrams to represent possible outcomes.
- 🧠 Compare experimental and theoretical probability.
- 📈 Understand how experimental probability tends to approach theoretical probability as the number of trials increases.
- 🧩 Apply probability to real-life situations and random experiments.
🎯 Learning Outcomes
After completing this chapter, students will be able to:
- Explain the meaning of probability and chance.
- Classify events according to their likelihood.
- Represent probability on the 0–1 scale.
- Calculate experimental probability from repeated trials.
- Calculate theoretical probability when outcomes are equally likely.
- Identify and write the sample space for a random experiment.
- Identify an event as one or more possible outcomes.
- Use tree diagrams to list possible outcomes.
- Calculate probabilities for multi-step experiments.
- Compare experimental and theoretical probability.
- Apply probability concepts to everyday and mathematical situations.
📌 Key Topics
- What Is Probability?
- Impossible, Less Likely, Equally Likely, More Likely and Certain Events
- Measuring Probability Objectively
- Experimental Probability
- Theoretical Probability
- Sample Space
- Events
- Tree Diagrams
- Probability of Single Events
- Probability of Multiple Outcomes
- Experimental vs Theoretical Probability
- Applications of Probability
⭐ Class 9 Maths Chapter 7 Study Resources
🧬 Diagrams
Coordinate graphs, geometric figures and visual representations to help understand the chapter.
📌 Important Questions
Most important questions to prepare for exams and chapter revision.
🎯 Competency-Based Questions
Application-focused questions designed to develop deeper understanding.
🎁 Free Class 9 Worksheets
Practise probability, sample spaces, events, experimental probability and theoretical probability with our free printable Chapter 7 worksheet.
Class 9 Maths – Chapter 7: Free Sample Worksheet10 Questions + Answer Key
NCERT Exercise Solutions – Ganita Manjari
Practise the questions from Chapter 7 and check your answers with our step-by-step solutions.
EX 7.1
EX 7.2
EX 7.3
EX 7.4
End-of-Chapter Exercises
Why Students Choose Our Class 9 Maths Resources?
2026–27 Focused
Printable PDFs
Original Practice
Chapter-Wise Resources
Mobile Friendly
Answer Keys
❓FAQ
Q1. What textbook is used for Class 9 maths in 2026–27?
The new NCERT Ganita Manjari textbook is used for Class 9 Maths for the 2026–27 academic session.
Q2. Which chapter is this page about?
This page is about Chapter 7 – The Mathematics of Maybe: Introduction to Probability from Ganita Manjari.
Q3. Are these NCERT textbook copies?
No. The study resources and practice materials on this page are supplementary resources created to support students’ learning. The NCERT textbook itself is not reproduced here.
Q4. Are the worksheets free?
Explain which resources are free and which may be available as complete practice resources.
Q5. Are answer keys included?
Explain depending on the particular resource.
Q6. Are these resources suitable for school revision?
Yes.
Q7. Will more Chapter 7 resources be added?
More Class 9 Maths Chapter 6 resources may be added in the future to provide additional practice and revision support.
Q8. How many exercise sets are there in Chapter 7?
Chapter 7 has four exercise sets: EX 7.1, EX 7.2, EX 7.3 and EX 7.4, followed by a separate End-of-Chapter Exercises section.
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