(Q7).State which of the following sets are empty and which are not?
(i) The set of lines passing through a given point.
(ii) Set of odd natural numbers divisible by 2.
(iii) {x : x is a natural number, x < 5 and x >5> 7}
(iv) {x: x is a common point to any two parallel lines}
(v) Set of even prime numbers.