Exercise 13.1 — Complementary Events

Exercise 13.1 — Complementary Events (Class 10)

Exercise 13.1 — Complementary Events is a practice exercise in Probability for Class 10 Mathematics. Probability of complementary events. This exercise develops your skills in experimental and theoretical probability and complementary events — both of which are tested directly in CBSE, Telangana and Andhra Pradesh board examinations.

How to Approach Exercise 13.1

• Before writing, re-read each problem and identify: what is given, what is asked, and which formula or method applies.
• This exercise tests experimental and theoretical probability — master the underlying concept from the introduction lesson before attempting.
• Show every step of your working in board exams — step marks are awarded independently of the final answer.
• After solving each problem, verify your answer by substituting back or checking it against all given conditions.
• Note the specific formula or identity used in each problem — these same tools appear in later exercises and in Class 10 board papers.

Marks and Exam Pattern for Exercise 13.1

Problems from Exercise 13.1 in Probability appear regularly in Class 10 board examinations across CBSE, Telangana and Andhra Pradesh. The questions test complementary events and sample space. Work through every problem in this exercise before your exam — the examiner draws from these standard problem types when setting the board paper.

How to Use This Lesson

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