Read the Chapter 15 Probability PDF for free. This is part of the official NCERT Book for Class 9 Mathematics for the 2026-27 academic year. Students can use this book online or offline.
NCERT Book Class 9 Mathematics - Chapter 15 Probability PDF
This part of NCERT Book Class 9 Maths Probability helps you learn Class 9 Mathematics step by step. Read the text to understand everything. You can also match your answers using the NCERT Solutions for Class 9 Mathematics.
Chapter 15 Probability NCERT Book Class 9 PDF (2026-27)
15.1 Introduction
In everyday life, we come across statements such as
(1) It will probably rain today.
(2) I doubt that he will pass the test.
(3) Most probably, Kavita will stand first in the annual examination.
(4) Chances are high that the prices of diesel will go up.
(5) There is a 50-50 chance of India winning a toss in today’s match.
The words ‘probably’, ‘doubt’, ‘most probably’, ‘chances’, etc., used in the statements above involve an element of uncertainty. For example, in (1), ‘probably
rain’ will mean it may rain or may not rain today. We are predicting rain today based on our past experience when it rained under similar conditions. Similar predictions are also made in other cases listed in (2) to (5).
The uncertainty of ‘probably’ etc can be measured numerically by means of ‘probability’ in many cases. Though probability started with gambling, it has been used extensively in the fields of Physical Sciences, Commerce, Biological Sciences, Medical Sciences, Weather Forecasting, etc.
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Chapter 15 Probability Digital Textbook & Resources for Class 9 Mathematics
Chapter Textbook PDF for Class 9 Mathematics
Obtain the official NCERT Textbook for Class 9 Mathematics Chapter 15 Probability, structured for active learning sessions. Subject teachers and academic experts consistently advise using the Chapter 15 Probability e-textbook because all terminal tests for Class 9 follow its prescribed curriculum closely. Retrieve your complete chapter resource securely in PDF format from this page.
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