NCERT Solutions for Class 9 Maths Chapter 15 Probability Exercise 15.1 in English Medium and प्रश्नावली 15.1 in Hindi Medium to study online or download in PDF. All NCERT Solutions and Apps are to free download. Download NCERT Books for CBSE Board, MP Board, Gujrat Board and UP Board for the new academic session 2019-20.
|Class 9:||Maths – गणित|
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NCERT Solutions for Class 9 Maths Chapter 15
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Class 9 Maths Chapter 15 Probability Solutions
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9 Maths Exercise 15.1 Solutions
9 गणित के प्रश्नावली 15.1 के हल
Important Terms & Definitions on Probability
- Experiment: An operation which can produce some well-defined outcomes, is called an experiment.
- Random Experiment: An experiment which, when repeated under identical conditions, do not produce the same outcomes every time, but if the outcomes produced is one out of the several possibilities, is known as a random experiment.
- Event: A possible outcome or combination of outcomes is called an event.
- Sure Event: If probability of an event is 1, then the event is called certain event or sure event.
- Impossible Event: If probability of an event is 0, then event is called an impossible event.
- The probability of an event is given by P(E) = [Number of trials in which E has happened]/[Total number of trials].
- The probability of happening of an event always lies from 0 to 1.
- The sum of all the possibilities of all possible outcomes of an experiment is 1.
- Experimental probability of an event can never be negative.
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