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Syllabus

Probability — Syllabus

CBSE · Class 11 · Mathematics

What Probability covers in CBSE Class 11 Mathematics: 4 topics, for the 2026-27 session. Part of the CBSE Class 11 Mathematics syllabus.

157 questions68 flashcards12 formulas & key relations5 concepts

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4 Topics · CBSE Class 11 Mathematics · 2026-27

Topics in Probability

1

1. Events and Sample Space

  • The sample space serves as a universal set for all questions concerned with the experiment.
  • An event E is said to have occurred if the outcome ω of the experiment satisfies ω ∈ E.
  • Any subset E of a sample space S is called an event.
2

2. Algebra of Events

  • The complementary event A' is the event 'not A'.
  • The complementary event A' equals S - A.
  • The event 'A or B' is defined as the union A ∪ B.
3

3. Axiomatic Approach to Probability

  • The probability P is a real-valued function whose domain is the power set of S and range is [0,1].
  • For any event E, P(E) ≥ 0.
  • P(S) = 1.
4

4. Probability of Equally Likely Outcomes

  • For equally likely outcomes, P(ωi) = 1/n where n is the number of sample points.
  • If n(S) = n and n(E) = m, then P(E) = m/n.
  • Probability of an event is the number of favourable outcomes divided by the total number of outcomes, when all outcomes are equally likely.

Key Concepts

Central concept: Probability

EventSample SpaceTypes of EventsAlgebra of EventsMutually Exclusive EventsExhaustive EventsAxiomatic ApproachProbability of an Event

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Frequently Asked Questions

What are the important topics in Probability for CBSE Class 11 Mathematics?
Key topics in Probability include Events and Sample Space, Algebra of Events, Axiomatic Approach to Probability, Probability of Equally Likely Outcomes. Study these first, then practise questions on each for Class 11 exams.
How should I revise Probability for Class 11 exams?
Learn the core ideas first, then work through the 157 practice questions on Probability. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All CBSE Class 11 Mathematics Syllabus

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