Let X be the set of all citizens of India. Elements x, y in X are said to be related if the difference of their age is 5 years. Which one of the following is correct ?

Let X be the set of all graduates in India. Elements x and y in X are said to be related if they are graduates of the same university. Which one of the following statements is correct?

Let X be the set of all persons living in Delhi. The persons a and b in X are said to be related if the difference in their ages is at most 5 years. The relation is

Let X be the set of all persons living in a city. Persons x, y in X are said to be related as xlty if y is at least 5 years older than x. Which one of the following is correct?

Let X be the set of all persons living in a city. Persons x, y in X are said to be related as xlty if y is at least 5 years older than x. Which one of the following is correct?

Let S be the set of all persons living in Delhi. We say that x, y in S are related if they were born in Delhi on the same day. Which one of the following is correct?

Let x be the HM and y be the GM of two positive numbers m and n. If 5x = 4y , then which one of the following is correct?

Let X and Y be two non-empty sets and let R_(1) and R_(2) be two relations from X into Y. Then, which one of the following is correct ?

Let A be the set of the children in a family.The relation x is a brother of y' relation on A is

Let A be the set of all children in the worid andR be a relation in A defined by x R y if x andyhave same sex.Then R is