Which of the following sets are empty sets?
{x : x is a real number and `x^2 < 0`}

Which of the following is an empty set?

Which of the following is the empty set

Find the intersection of each of the following pairs of set :- A ={x : x is a natural number and multiple of 3} B = {x : x is a natural number less than 6}

Find the union of each of the following pairs of set : A = {x : x is a natural number and multiple of 3} B = {x : x is a natural number less than 6}

Which of the following are examples of the null set :- { x : x is a natural numbers, x 7 }

Which of the following pairs of sets are disjoint:- {x : x is an even integer } and {x : x is an odd integer}

Whether the following is empty (null) set? {x:x 7, x in N}

Write the following set in roster form: D = {x : x is a prime number which is divisor of 60}

Write the following set in roster form: B = {x : x is a natural number less than 6}

State the negations for the following statements : There is no real number x, such that x^2 = -1 .