1.

Which of the following is a singleton set ?A. The set of all the months in a year having exactly 30 days.B. The set of all the days in a week.C. The set of all the natural satellites of the earth in the solar system.D. The set of all the intersecting points of two parallel lines in a plane.

Answer» Correct Answer - C
(a) all months in a year having exactly 30 days are April, June, September and November.
`:.` It is not a singleton set.
(b) In a week, we have 7 days.
`:.` It is not a singleton set.
(c) The natural satellite of the earth in the solar system is moon.
`:.` It is singleton set.
(d) Parallel lines in a plane never intersect.
`:.` The set of all intersecting points of two parallel lines in a plane is not a singleton set.
Hence, the correct option is (c).


Discussion

No Comment Found

Related InterviewSolutions