Sets & their Representation

# Sets & their Representation Video Lecture | Mathematics (Maths) Class 11 - Commerce

## Mathematics (Maths) Class 11

75 videos|238 docs|91 tests

## FAQs on Sets & their Representation Video Lecture - Mathematics (Maths) Class 11 - Commerce

 1. What is a set?
Ans. A set is a collection of distinct objects, which are called its elements. In other words, a set is a well-defined collection of objects that can be anything such as numbers, letters, or even other sets.
 2. How are sets represented?
Ans. Sets can be represented in two ways- roster form and set-builder form. In roster form, the elements of the set are enclosed in curly braces and separated by commas. For example, {1, 2, 3}. In set-builder form, the set is defined by describing the properties that its elements must satisfy. For example, {x | x is a natural number and x < 5}.
 3. What is the cardinality of a set?
Ans. The cardinality of a set is the number of elements in the set. For example, the set {1, 2, 3} has a cardinality of 3.
 4. What is an empty set?
Ans. An empty set is a set that contains no elements. It is denoted by the symbol ∅ or {}.
 5. What is a subset?
Ans. A subset is a set that contains only elements that are also in another set. In other words, if every element of set A is also an element of set B, then A is a subset of B, denoted by A ⊆ B.

## Mathematics (Maths) Class 11

75 videos|238 docs|91 tests

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