RD Sharma Solutions for Class 7 Chapter 25 Probability- It is a number that reflects a chance or likelihood that a particular event will occur. The word probability is commonly used in our day-to-day conversation like it may probably rain today, he is probably right, he may probably join games etc. However, in the theory of probability, we assign a numerical value to the degree of uncertainty. ‘Probability’ has emerged as one of the essential tools of statistics today and has a wide range of applications in science and engineering. Chapter 25 of RD Sharma Class 7 Maths also deals with some problems related to the probability of occurrence of an event including some illustrations.