Question

Which of the following is infinite set?

(a) Set of days of week

(b) Set of points on a line

(c) Set of months in a year

(d) Set of prime numbers less than 99

I got this question in exam.

Question is taken from Finite and Infinite Sets in division Sets of Mathematics – Class 11

Answer 1

Right choice is (b) Set of points on a line

For explanation I would say: There are infinite number of points on a line. So, the set of points on a line is infinite. Rest all sets contain finite number of elements.

Set of days of week has 7 elements and set of months in a year has 12 elements.                                                                                           Set of prime number less than 99 {2,3,5,7,11,……….,97}.