
CBSE Important Questions›

CBSE Previous Year Question Papers›
 CBSE Previous Year Question Papers
 CBSE Previous Year Question Papers Class 12
 CBSE Previous Year Question Papers Class 10

CBSE Revision Notes›

CBSE Syllabus›

CBSE Extra Questions›

CBSE Sample Papers›
 CBSE Sample Papers
 CBSE Sample Question Papers For Class 5
 CBSE Sample Question Papers For Class 4
 CBSE Sample Question Papers For Class 3
 CBSE Sample Question Papers For Class 2
 CBSE Sample Question Papers For Class 1
 CBSE Sample Question Papers For Class 12
 CBSE Sample Question Papers For Class 11
 CBSE Sample Question Papers For Class 10
 CBSE Sample Question Papers For Class 9
 CBSE Sample Question Papers For Class 8
 CBSE Sample Question Papers For Class 7
 CBSE Sample Question Papers For Class 6

ISC & ICSE Syllabus›

ICSE Question Paper›
 ICSE Question Paper
 ISC Class 12 Question Paper
 ICSE Class 10 Question Paper

ICSE Sample Question Papers›
 ICSE Sample Question Papers
 ISC Sample Question Papers For Class 12
 ISC Sample Question Papers For Class 11
 ICSE Sample Question Papers For Class 10
 ICSE Sample Question Papers For Class 9
 ICSE Sample Question Papers For Class 8
 ICSE Sample Question Papers For Class 7
 ICSE Sample Question Papers For Class 6

ICSE Revision Notes›
 ICSE Revision Notes
 ICSE Class 9 Revision Notes
 ICSE Class 10 Revision Notes

ICSE Important Questions›

Maharashtra board›

RajasthanBoard›
 RajasthanBoard

Andhrapradesh Board›
 Andhrapradesh Board
 AP Board Sample Question Paper
 AP Board syllabus
 AP Board Previous Year Question Paper

Telangana Board›

Tamilnadu Board›

NCERT Solutions Class 12›
 NCERT Solutions Class 12
 NCERT Solutions Class 12 Economics
 NCERT Solutions Class 12 English
 NCERT Solutions Class 12 Hindi
 NCERT Solutions Class 12 Maths
 NCERT Solutions Class 12 Physics
 NCERT Solutions Class 12 Accountancy
 NCERT Solutions Class 12 Biology
 NCERT Solutions Class 12 Chemistry
 NCERT Solutions Class 12 Commerce

NCERT Solutions Class 10›

NCERT Solutions Class 11›
 NCERT Solutions Class 11
 NCERT Solutions Class 11 Statistics
 NCERT Solutions Class 11 Accountancy
 NCERT Solutions Class 11 Biology
 NCERT Solutions Class 11 Chemistry
 NCERT Solutions Class 11 Commerce
 NCERT Solutions Class 11 English
 NCERT Solutions Class 11 Hindi
 NCERT Solutions Class 11 Maths
 NCERT Solutions Class 11 Physics

NCERT Solutions Class 9›

NCERT Solutions Class 8›

NCERT Solutions Class 7›

NCERT Solutions Class 6›

NCERT Solutions Class 5›
 NCERT Solutions Class 5
 NCERT Solutions Class 5 EVS
 NCERT Solutions Class 5 English
 NCERT Solutions Class 5 Maths

NCERT Solutions Class 4›

NCERT Solutions Class 3›

NCERT Solutions Class 2›
 NCERT Solutions Class 2
 NCERT Solutions Class 2 Hindi
 NCERT Solutions Class 2 Maths
 NCERT Solutions Class 2 English

NCERT Solutions Class 1›
 NCERT Solutions Class 1
 NCERT Solutions Class 1 English
 NCERT Solutions Class 1 Hindi
 NCERT Solutions Class 1 Maths

JEE Main Question Papers›

JEE Main Syllabus›
 JEE Main Syllabus
 JEE Main Chemistry Syllabus
 JEE Main Maths Syllabus
 JEE Main Physics Syllabus

JEE Main Questions›
 JEE Main Questions
 JEE Main Maths Questions
 JEE Main Physics Questions
 JEE Main Chemistry Questions

JEE Main Mock Test›
 JEE Main Mock Test

JEE Main Revision Notes›
 JEE Main Revision Notes

JEE Main Sample Papers›
 JEE Main Sample Papers

JEE Advanced Question Papers›

JEE Advanced Syllabus›
 JEE Advanced Syllabus

JEE Advanced Mock Test›
 JEE Advanced Mock Test

JEE Advanced Questions›
 JEE Advanced Questions
 JEE Advanced Chemistry Questions
 JEE Advanced Maths Questions
 JEE Advanced Physics Questions

JEE Advanced Sample Papers›
 JEE Advanced Sample Papers

NEET Eligibility Criteria›
 NEET Eligibility Criteria

NEET Question Papers›

NEET Sample Papers›
 NEET Sample Papers

NEET Syllabus›

NEET Mock Test›
 NEET Mock Test

NCERT Books Class 9›
 NCERT Books Class 9

NCERT Books Class 8›
 NCERT Books Class 8

NCERT Books Class 7›
 NCERT Books Class 7

NCERT Books Class 6›
 NCERT Books Class 6

NCERT Books Class 5›
 NCERT Books Class 5

NCERT Books Class 4›
 NCERT Books Class 4

NCERT Books Class 3›
 NCERT Books Class 3

NCERT Books Class 2›
 NCERT Books Class 2

NCERT Books Class 1›
 NCERT Books Class 1

NCERT Books Class 12›
 NCERT Books Class 12

NCERT Books Class 11›
 NCERT Books Class 11

NCERT Books Class 10›
 NCERT Books Class 10

Chemistry Full Forms›
 Chemistry Full Forms

Biology Full Forms›
 Biology Full Forms

Physics Full Forms›
 Physics Full Forms

Educational Full Form›
 Educational Full Form

Examination Full Forms›
 Examination Full Forms

Algebra Formulas›
 Algebra Formulas

Chemistry Formulas›
 Chemistry Formulas

Geometry Formulas›
 Geometry Formulas

Math Formulas›
 Math Formulas

Physics Formulas›
 Physics Formulas

Trigonometry Formulas›
 Trigonometry Formulas

CUET Admit Card›
 CUET Admit Card

CUET Application Form›
 CUET Application Form

CUET Counselling›
 CUET Counselling

CUET Cutoff›
 CUET Cutoff

CUET Previous Year Question Papers›
 CUET Previous Year Question Papers

CUET Results›
 CUET Results

CUET Sample Papers›
 CUET Sample Papers

CUET Syllabus›
 CUET Syllabus

CUET Eligibility Criteria›
 CUET Eligibility Criteria

CUET Exam Centers›
 CUET Exam Centers

CUET Exam Dates›
 CUET Exam Dates

CUET Exam Pattern›
 CUET Exam Pattern
Class 9 Mathematics Chapter 15 Notes
Class 9 Mathematics Revision Notes for Probability of Chapter 15
Probability refers to the likelihood or chances of an event occurring in an uncertain situation. It is a method used to gauge the degree of ambiguity in any given circumstance. Probability is regarded in mathematics as an experimental approach and a result of probability based on actual experiments; this is known as empirical probability. The number of trials and the frequency with which the desired event occurs affect probability. To better understand these concepts, access the Class 9 Mathematics Chapter 15 Notes from Extramarks.
Class 9 Mathematics Revision Notes for Probability of Chapter 15
Class 9 Mathematics Revision Notes Chapter 15 Probability
Probability Formula
If there are n trials total, then the probability that an event (D) will occur is given by: P (D) = number of trials where the event occurred/number of trials overall.
Summary of Notes of Class 9 Revision Notes Chapter 15 Probability
The key points from the probability notes for Class 9 Mathematics Chapter 15 are listed below.
Uses and Application of Probability
Numerous fields, including the physical sciences, medical sciences, biological sciences, commerce, weather forecasting, mathematics, etc., heavily rely on probability.
Standard Terms Related to Probability
Randomness
The term “random experiment” refers to a procedure of experimentation where the outcome is unknown.
Trial
A trial is an action with potential outcomes that may include more than one. Take the spade card number seven out of the deck, for instance, or the result of a dice throw, etc.
Independent Trial
If the outcome of one random trial has no bearing on the outcome of another, the trial is said to be independent. Like flipping a coin or rolling a die, these actions are independent trials because they cannot possibly affect one another.
Event
The gathering of some experimental results will occur as the experiment is being conducted. When we roll the dice, for instance, the likelihood of getting an odd number, such as 1, 3, or 5, is three. The event would then have three possible outcomes.
Impossible Events
While performing a test, if it is not possible for an event to take place, then its probability will be zero (0). The term “impossible event” refers to this. One cannot, for instance, throw a dice with the outcome of 8, for example. Therefore, there is no chance of rolling an 8 on the dice.
Sure or Certain Event
If an event is certain to occur during the course of a test, it is referred to as having a certain probability. Here, the likelihood is 1. For instance, if a bag only contains red balls, it is guaranteed that a red ball will be drawn from it.
This demonstrates that an event could have a probability of between 1 and 0. Thus, 0 ≤ P (E) ≤ 1.
Elementary Event
An event is known as an elementary event if there is only one possible outcome. For instance, if all of an experiment’s fundamental events are added, their total will equal 1.
The basic form is as follows:
P (H) + P (T) = 1
P (H) + P= 1 (where H ‘not H’).
P (H) – 1 = P
P (H) and P are called complementary events.
Solved Examples Included In Revision Notes Class 9 Mathematics Chapter 15
FAQs (Frequently Asked Questions)
1. How can students benefit from Chapter 15 Mathematics Class 9 Notes?
It is crucial to revise to improve conceptual understanding and score well in exams. Revision notes are always preferred for a quick overview of the chapter. In order to review all of their previously prepared units and concepts, students may find the Probability Chapter 15 Mathematics Class 9 Notes created by subject matter experts to be very helpful. This is especially true during exam times when students must review the entire syllabus.
2. What key ideas are covered in Class 9 Mathematics Chapter 15 Notes?
Class 9 Chapter 15 Mathematics Notes have brief points for all the topics under probability. The CBSE Notes go into great detail on each concept, beginning with the definition of probability and concluding with various events that are likely to occur. The topics covered include:
 Probability
 Experiment and Trial
 Experimental Probability
 Coin Tossing Experiment
 Dice Roll Experiment
Add up the odds of both favourable and unfavourable scenarios. The notes, which are accessible from the Extramarks, cover these crucial subjects.
3. What are the advantages of using the Class 9 Mathematics Chapter 15 Notes for the chapter on "Probability"?
Students can easily understand the concepts in the chapter “Probability,” which is about chance and likelihood, thanks to the concise and accurate Class 9 Mathematics Chapter 15 Notes, which make great reference material for revisions. Students quickly go over any important material before their exams while covering all the material they need to know from this chapter with these notes. They are created by subject matter experts, giving students the confidence they need to understand the material and prepare effectively for exams. Students can easily access the revision materials from the Extramarks.