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Install NowCBSE class 9 Mathematics Chapter 15 Probability notes in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Probability class 9 Notes latest chapter wise notes for quick preparation of CBSE board exams and school based annual examinations. Class 9 Mathematics notes on Chapter 15 Probability are also available for download in CBSE Guide website.

## CBSE Guide Probability class 9 Notes

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## 9 Mathematics notes Chapter 15 Probability

Download CBSE class 9th revision notes for Chapter 15 Probability in PDF format for free. Download revision notes for Probability class 9 Notes and score high in exams. These are the Probability class 9 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the best tips recommended by teachers during exam days.

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**CBSE Class 09 Mathematics Revison Notes Chapter 15 PROBABILITY**

**Probability – An Experimental Approach**

- Experiment – A procedure which produces some well defined possible outcomes..
- Random experiment – An experiment which when performed produces one of the several possible outcomes called a random experiment.
- Trial – When we perform an experiment it is called a trial of the experiment.
- Event – The set of outcomes of an experiment to which probability is assigned.It is usually denoted by capital letter of English alphabets like A, B, E etc.
- A collection of two or more possible outcomes (elementary events) of an experiment called a compound event.
- An event is said to be happen in trial if any one of the elementary events (or outcomes) satisfying its conditions is an outcome.
- The empirical (or experimental) probability P(E) of an event E is given by
- The probability of an event lies between 0 and 1 (0 and 1 are included)
- Impossible event: Event which never happen.
- Certain event – event which definitely happen.

## Probability class 9 Notes

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**CBSE Class-9 Revision Notes and Key Points**

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