In this chapter, students will learn the basic concept of probability as a measure of the likelihood of an event. They will understand and calculate the probability of elementary events by identifying the total number of outcomes and favourable outcomes in simple experiments such as tossing a coin or rolling a die.

Students will also learn to find the probability of compound events and complementary events, and understand their relationships. The chapter explains impossible events and sure events, helping students analyse real-life situations logically. This chapter strengthens reasoning skills and plays an important role in CBSE Board examinations and everyday decision-making.