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Syllabus

Sets — Syllabus

NIOS · Class 12 · Mathematics

What Sets covers in NIOS Class 12 Mathematics: 4 topics, for the 2026-27 session. Part of the NIOS Class 12 Mathematics syllabus.

45 questions32 flashcards5 concepts

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A comparison illustrating how the same set can be represented using the Roster (listing) method and the Set-Builder method, with clear examples.
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4 Topics · NIOS Class 12 Mathematics · 2026-27

Topics in Sets

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1. Definition and Basic Concepts of Sets

  • A set is a well-defined collection of distinct objects called elements
  • Well-defined means we can clearly determine whether any object belongs to the set or not
  • Sets are denoted by capital letters (A, B, C, etc.) and elements by lowercase letters
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2. Representation of Sets

  • Two methods to represent sets: Roster Form and Set-Builder Form
  • Roster form: List all elements explicitly separated by commas in curly brackets
  • Set-builder form: Describe elements by stating common property using the condition x : property
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3. Classification of Sets

  • Finite sets: Number of elements can be counted (can determine the last element)
  • Infinite sets: Number of elements cannot be counted (no last element exists)
  • Empty/Null set (φ or {}): Set containing no elements
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4. Subsets and Power Sets

  • Set A is a subset of B (A ⊆ B) if every element of A is in B
  • Empty set is subset of every set: φ ⊆ A for all sets A
  • Every set is a subset of itself: A ⊆ A

Key Concepts

A set is a wellIn Roster formIn SetA finite set is one whereAn empty set or null set

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Frequently Asked Questions

What are the important topics in Sets for NIOS Class 12 Mathematics?
Key topics in Sets include Definition and Basic Concepts of Sets, Representation of Sets, Classification of Sets, Subsets and Power Sets. Study these first, then practise questions on each for the NIOS Class 12 board exam.
How should I revise Sets for the NIOS Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Sets. 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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