Ex 1.4, 3 - If A and B are two sets such that A subset of B

Ex 1.4, 3 - Chapter 1 Class 11 Sets - Part 2

 

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Ex 1.4, 3 (INTRODUCTION) If A and B are two sets such that A ⊂ B, then what is A ∪ B? Introduction(Example) Let’s take an example A = {1, 2} B = {1, 2, 3} Every element of A is in B. So, A is a subset of B i.e. A ⊂ B. A ∪ B = {1, 2} ∪ {1, 2, 3} = {1, 2, 3} = B Ex 1.4, 3 If A and B are two sets such that A ⊂ B, then what is A ∪ B? If A ⊂ B, then All elements of A are in B. So, A ∪ B = B ∪ Union - Combination of two sets ⊂ Subset - A ⊂ B (all elements of set A in set B)

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.