text: Ex 1.5
  
  Chapter 1 Class 11 Sets
  Serial order wise
  
  Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
  
  ### Transcript
  
  Ex 1.5, 3 Taking the set of natural numbers as the universal set, write down the complements of the following sets: (i) {x: x is an even natural number} Universal set is the set of natural numbers {x: x is an even natural number}’ = {x: x is an odd natural number} Ex 1.5, 3 Taking the set of natural numbers as the universal set, write down the complements of the following sets: (iv) {x: x is a prime number} U is set of natural numbers {x: x is a prime number}´ = {x: x ∈ N and x is a composite number or x = 1}