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Set Theory — Practice Questions

CAT · Quantitative Aptitude

Free Set Theory practice questions for CAT Quantitative Aptitude 2026 — chapter-wise MCQs with answers and detailed solutions.

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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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Practice Questions — Set Theory

49 questions available from Set Theory for CAT Quantitative Aptitude.

Question Types

multiple choicemultiple correcttrue falsenumerical

Sample Questions

1multiple choice1 marks

What does the symbol ∩ represent in set theory?

2multiple choice1 marks

If set A has 15 elements, set B has 12 elements, and A ∩ B has 5 elements, how many elements are in A ∪ B?

3multiple choice1 marks

In a Venn diagram with two circles A and B, which area represents elements that belong to A but not to B?

4multiple choice1 marks

If U is the universal set containing 50 elements, and set A contains 20 elements, how many elements are in A'(complement of A)?

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Frequently Asked Questions

What topics are covered in Set Theory for CAT?
Set Theory is an important chapter in CAT Quantitative Aptitude. 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 CAT?
Set Theory is a frequently tested chapter in CAT Quantitative Aptitude. 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 CAT?
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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