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Ex 1.4, 8 - Which pairs are disjoint (i) {1, 2, 3, 4} - Ex 1.4

Ex 1.4, 8 - Chapter 1 Class 11 Sets - Part 2

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Ex 1.4, 8 Which of the following pairs of sets are disjoint (i) {1, 2, 3, 4} and {x: x is a natural number and 4 ≤ x ≤ 6} Natural number = 1, 2, 3, 4, 5, 6, 7, 8, 9, … {x: x is a natural number and 4 ≤ x ≤ 6} = {4, 5, 6} Now, {1, 2, 3, 4} ∩ {4, 5, 6} = {4} ≠ ∅ Two sets are disjoint if they have no common element ∩ Intersection – Common of two sets If A ∩ B = ∅, then sets are disjoint Since, there is a common element in both set. Therefore, this pair of sets is not disjoint.

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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.