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Set Concepts — Practice Quiz

ICSE · Class 7 · Mathematics

Try a 4-question quiz on Set Concepts for ICSE Class 7 Mathematics: tap an answer to check it and see why. 78 questions in the full chapter test.

78 questions34 flashcards9 formulas & key relations5 concepts

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Quick Quiz: Set Concepts

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1

A set A has 5 elements and a set B has 3 elements. If A and B are disjoint, find the number of elements in A ∪ B.

2

Set A has 7 elements and set B has 4 elements. If n(A ∩ B) = 2, find n(A ∪ B).

3

Set A has 10 elements, set B has 6 elements, and n(A ∪ B) = 12. Find n(A ∩ B).

4

Set A has 9 elements and set B has 5 elements. If n(A ∩ B) = 3, find n(A - B).

78 Questions·
multiple choicemultiple correcttrue false

Sample Questions

1multiple choice
3 marks

Set A has 14 elements and set B has 9 elements. If n(A ∩ B) = 5, find n(B - A).

Show answer

4

Use n(B - A) = n(B) - n(A ∩ B). So, 9 - 5 = 4.

2multiple choice
3 marks

A set has 4 elements. Find the number of subsets and the number of proper subsets.

Show answer

16 subsets and 15 proper subsets

Number of subsets = 2^n. Here n = 4, so 2^4 = 16. Number of proper subsets = 2^n - 1 = 16 - 1 = 15.

3multiple choice
3 marks

A set has 5 elements. How many proper subsets does it have?

Show answer

31

Number of proper subsets = 2^n - 1. For n = 5, 2^5 - 1 = 32 - 1 = 31.

4multiple choice
3 marks

Set A = {2, 4, 6, 8, 10} and set B = {4, 8, 12}. Find n(A ∪ B).

Show answer

6

First find A ∪ B = {2, 4, 6, 8, 10, 12}. It has 6 elements, so n(A ∪ B) = 6.

+74 more questions on Set Concepts (ICSE Class 7 Mathematics)

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Frequently Asked Questions

What are the important topics in Set Concepts for ICSE Class 7 Mathematics?
Key topics in Set Concepts include Basic Idea of a Set, Ways to Represent a Set, Cardinal Number and Types of Sets, Disjoint, Joint, Equal, and Equivalent Sets. Study these first, then practise questions on each for Class 7 exams.
How many practice questions are there for Set Concepts?
There are 78 questions on Set Concepts. Try the 4-question sample quiz on this page first; each answer shows an explanation when you tap it.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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