Question

Which of the following are examples of the null set
(i) Set of odd natural numbers divisible by 2
(ii) Set of even prime numbers
(iii) { x : x is a natural numbers, x < 5 and x > 7 }
(iv) { y : y is a point common to any two parallel lines}
NCERT Solutions for Class 11th Mathematics Chapter 1 Exercise 1.2 1

Answer 1

(i)   Set of odd natural numbers divisible by 2
(iii)  { x : x is a natural numbers, x < 5 and x > 7 }