Mathematics - Sets
CBSE Class 11
NCERT Exercise 1.2
Q1. Which of the following are examples of the null set
(i) Set of odd natural numbers divisible by 2
Answer: Yes
(ii) Set of even prime numbers
Answer: No
(iii) { x : x is a natural numbers, x < 5 and x > 7 }
Answer: Yes
(iv) { y : y is a point common to any two parallel lines}
Answer: Yes