Check sibling questions

Ex 1.4, 5 - Find intersection (i) X = {1,3,5}, Y = {1,2,3}

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Ex 1.4, 5 - Chapter 1 Class 11 Sets - Part 2

 

Ex 1.4, 5 - Chapter 1 Class 11 Sets - Part 3

Ex 1.4, 5 - Chapter 1 Class 11 Sets - Part 4

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Ex 1.4, 5 - Chapter 1 Class 11 Sets - Part 5

Ex 1.4, 5 - Chapter 1 Class 11 Sets - Part 6

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Ex 1.4, 5 - Chapter 1 Class 11 Sets - Part 7

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Transcript

Ex 1.4, 5 Find the intersection of each pair of sets: (i) X = {1, 3, 5} , Y = {1, 2, 3} X ∩ Y = {1,3,5} ∩ {1,2,3} = {1, 3} ∩ Intersection – Common of two sets Ex 1.4, 5 Find the intersection of each pair of sets: (ii) A = {a, e, i, o, u} B = {a, b, c} A ∩ B = {a, e, i, o, u} ∩ {a, b, c} = {a} ∩ Intersection – Common of two sets Ex 1.4, 5 Find the intersection of each of the following pairs of sets: (iii) A = {x: x is a natural number and multiple of 3} B = {x: x is a natural number less than 6} Natural number = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,… A = {x: x is a natural number and multiple of 3} Multiple of 3 = 3, 6 ,9,12,15… A = {3, 6, 9 …} ∩ Intersection – Common of two sets B = {x: x is a natural number less than 6} = {1, 2, 3, 4, 5} A ∩ B = {3, 6, 9 …} ∩ {1, 2, 3, 4, 5} = {3} Ex 1.4, 5 Find the intersection of each of the following pairs of sets: (iv) A = {x: x is a natural number and 1 < x ≤ 6} B = {x: x is a natural number and 6 < x< 10} Natural number = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,… A = {x: x is a natural number and 1 < x ≤ 6} = {2, 3, 4, 5, 6} B = {x: x is a natural number and 6 < x< 10} = {7, 8, 9} A ∩ B = {2, 3, 4, 5, 6} ∩ {7, 8, 9} = { } = ∅ Ex 1.4, 5 Find the intersection of each pair of sets: (v) A = {1, 2, 3}, B = ∅ Given A = {1, 2, 3} and B = ∅ = {} A ∩ B = {1, 2, 3} ∩ {} = ∅ ∴ There is no common item between both sets ∩ Intersection – Common of two sets

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.