![Ex 1.5, 3 - Chapter 1 Class 11 Sets - Part 10](https://d1avenlh0i1xmr.cloudfront.net/7244e587-9948-4216-91bd-3fbef8f9fa94/slide27.jpg)
Ex 1.5
Last updated at April 16, 2024 by Teachoo
Ex 1.5, 3 Taking the set of natural numbers as the universal set, write down the complements of the following sets: (ix) {x: 2x + 5 = 9} U = {1, 2, 3, 4, 5…..} 2x + 5 = 9 2x = 9 – 5 2x = 4 x = 4/2 x = 2 {x: 2x + 5 = 9}´ = {x : x = 2}’ = {x: x ∈ N and x ≠ 2}