Question

Which of the following is an empty set? a)A point of intersection of two parallel lines.b)A set of odd prime numbers.c)Q = {x|x ∈ w, -1 < x < 2}d )A month in an English calendar not having 30 or 31 days.​

Answer 1

Answer:

Hello mate

Step-by-step explanation:

Null set is a set which has zero elements in it.

(a)according to Euclid's geometry no two parallel lines will not meet each other.

so the point of intersection of two parallel lines is a null set.

(b)every prime number except 2 is odd prime number.

so this is a infinite set.

(c)x=0,1 this is finite set

(d)february,this is a finite set

correct answer=option (b)

Hope the qn is answered