Class IX An Experimental Approach

Probability is defined as the likelihood or chance of something occurring. It is widely used in the study of mathematics, statistics, gambling, physical science, Biological science, weather forecasting, finance etc. to draw conclusions.
Probability is defined as the numerical method of measuring uncertainty involved in a situation.
An experiment is defined as an action or process that results in well defined outcomes. Read more at http://learnnext.com/lesson/CBSE-IX-Maths-Probability-Experimental-Approach.htm