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Revision Notes

Set Concepts

ICSE · Class 7 · Mathematics

Quick revision notes for Set Concepts — ICSE Class 7 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

78 questions34 flashcards5 concepts

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Key Topics to Revise

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1. Basic Idea of a Set

  • A set is a collection of well-defined objects, things, or symbols.
  • Well-defined means it is always clear whether something belongs to the set or not.
  • The objects in a set are called elements or members.
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2. Ways to Represent a Set

  • A set can be written in description form, roster or tabular form, and set-builder form.
  • In description form, the set is described in words.
  • In roster form, all elements are listed inside brackets.
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3. Cardinal Number and Types of Sets

  • The cardinal number of a set is the number of elements in it.
  • If a set A has 5 elements, then n(A) = 5.
  • If B = {0}, then n(B) = 1 because 0 is an element of the set.
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4. Disjoint, Joint, Equal, and Equivalent Sets

  • Sets having no element in common are called disjoint sets.
  • Sets having at least one element in common are called joint or overlapping sets.
  • Two sets are equal if the elements of both sets are the same.

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Full Notes

Key Concepts

A set is a collectionSets are usually written with capitalThe symbol ∈ means belongsThe elements in a set canThe cardinal number of a set

Frequently Asked Questions

What are the important topics in Set Concepts for ICSE Class 7 Mathematics?
Set Concepts covers several key topics that are frequently asked in ICSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Set Concepts — ICSE Class 7 Mathematics?
Understand the core concepts first, then work through the 78 practice questions available for this chapter. Revise formulas and 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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