Find, If the Following Sets Are Singleton Sets: a = {X : 7x – 3 = 11} - Mathematics

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Sum

Find, if the following sets are singleton sets:

A = {x : 7x – 3 = 11}

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Solution

A = {x : 7x – 3 = 11}

7x -3 = 11

⇒ 7x = 11 + 3

⇒ 7x = 14

⇒ x = `(14)/(7)` = 2

∴ A = {2}

Hence given set A is a singleton set.

Concept: Types of Sets
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Chapter 6: Sets - Exercise 6 (B) [Page 67]

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Selina Concise Mathematics Class 8 ICSE
Chapter 6 Sets
Exercise 6 (B) | Q 4.2 | Page 67
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