Question

Which of the following collections are sets?
(i) The collection of prime numbers.
(ii) The collection of easy sub topics in this chapter.
(iii) The collection of good teachers in your school.
(iv) The collection of girls in your class.
(v) The collection of odd natural numbers.

• A. $\left(i\right),\left(ii\right),\left(iv\right)$ only
• B. $\left(i\right),\left(iv\right),\left(v\right)$ only
• C. $\left(ii\right),\left(iii\right),\left(v\right)$ only
• D. $\left(iii\right),\left(iv\right)$ only

Answer 1

Answer: (B)

$\left(i\right),\left(iv\right),\left(v\right)$ only

A set is a group or collection of distinct objects or numbers, considered as an object on its own right. Collection $\left(i\right),\left(iv\right)$and$\left(v\right)$ come under group of same entities. But remaining are subsets