Question

Which of the following is empty set in ℚ

a) {X ϵ ℚ: x2 = 2}
b) {X ϵ ℚ: x2 = 0}
c) {X ϵ ℚ: x2 − 25 = 0}
d) {X ϵ ℚ: 3x − 5 = 2} ​

Answer 1

Answer:

( b ) is the correct answer