Question

How to define a set?

(a) A collection of well-defined objects or element

(b) A collection of unordered objects or element

(c) Any random elements

(d) A collection of special characters

This question was posed to me by my school principal while I was bunking the class.

My question is taken from Sets and their Representations in section Sets of Mathematics – Class 11

Answer 1

Right answer is (a) A collection of well-defined objects or element

Explanation: Generally, a set is defined as a collection of well defined objects or elements.

Each element in a set is unique.

Say for example, if S a set it is represented as,

S = {x: 2x^2  ᵾ x< 5 and x € N}

Then the elements present in the set will be

S = {2, 8, 18, 32}.