Question

One or more options are correct:

Which of the following is/are infinite set?

• A. The set of all lines parallel to Y-axis
• B. Set of all atoms in solar system
• C. Set of letters in English alphabet
• D. Set of circles passing through (0, 0)

Answer 1

Answer: (A), (D)

The correct options are
A

The set of all lines parallel to Y-axis

D

Set of circles passing through (0, 0)

A - There are infinite lines parallel to y-axis

B - Though we may not count number of atoms, we can be sure that the number is large and it is a finite number.

C - Number of elements in the set of letters in English alphabet is finite.

D - There are infinite number of circles that can have centre as (0, 0)

So, A & D are infinite sets.