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Formula Sheet

Set Theory — Formula Sheet

CMAT · Quantitative Techniques & Data Interpretation

Free Set Theory formula sheet for CMAT Quantitative Techniques & Data Interpretation 2026 — all important formulas, equations, and constants for quick reference.

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A Venn diagram illustrating two overlapping sets, A and B, with the intersection (A ∩ B) shaded to represent elements common to both sets. Includes the formula for the union of two sets.
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Formula Sheet — Set Theory

Important formulas and equations from Set Theory for CMAT Quantitative Techniques & Data Interpretation.

Formulas — Set Theory

Basic Set Theory Definitions

Two-Set Problems

n(A ∪ B) = n(A) + n(B) - n(A ∩ B)
n(A ∩ B) = n(A) + n(B) - n(A ∪ B)
n(only A) = n(A) - n(A ∩ B)

Three-Set Problems

n(A ∪ B ∪ C) = n(A) + n(B) + n(C) - n(A ∩ B) - n(B ∩ C) - n(A ∩ C) + n(A ∩ B ∩ C)
n(exactly one) = n(A) + n(B) + n(C) - 2n(A ∩ B) - 2n(B ∩ C) - 2n(A ∩ C) + 3n(A ∩ B ∩ C)
n(exactly two) = n(A ∩ B) + n(B ∩ C) + n(A ∩ C) - 3n(A ∩ B ∩ C)

Problem-Solving Strategies

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Frequently Asked Questions

What topics are covered in Set Theory for CMAT?
Set Theory is an important chapter in CMAT Quantitative Techniques & Data Interpretation. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Basic Concepts and Terminology, Venn Diagrams and Visual Representation, Problem-Solving Strategies, Advanced Applications and Logical Reasoning.
How important is Set Theory for CMAT?
Set Theory is a frequently tested chapter in CMAT Quantitative Techniques & Data Interpretation. Questions from this chapter appear regularly in previous year papers. There are 49 practice questions available for this chapter.
How to prepare Set Theory for CMAT?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.

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