Which of the following are examples of the null set 3 marks i Set of odd natural numb...........

Which of the following are examples of the null set      (3 marks)

(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}