Probability
CBSE · Class 11 · Applied Mathematics
Quick revision notes for Probability — CBSE Class 11 Applied Mathematics. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
Random Experiments and Sample Space
- A random experiment has multiple possible outcomes that cannot be predicted in advance
- Sample space (S) is the set of all possible outcomes of a random experiment
- An outcome is a single result of a random experiment
Events and Types of Events
- An event is a subset of the sample space
- Empty set (∅) represents impossible event with probability 0
- Sample space (S) represents sure event with probability 1
Conditional Probability
- Conditional probability measures likelihood of an event given another event has occurred
- Written as P(A|B) - 'probability of A given B'
- The condition reduces the sample space to only outcomes where B occurs
Theorem of Total Probability
- Expresses total probability of an outcome that can occur through several distinct paths
- Requires a partition of sample space - mutually exclusive and exhaustive events
- Each path contributes to total probability based on its own probability and conditional probability
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What are the important topics in Probability for CBSE Class 11 Applied Mathematics?
Probability covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
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Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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