### Mathematics Class XI

Unit-I: Sets and Functions
Chapter 1: Sets
Unit-II: Algebra
Chapter 5: Binomial Theorem
Chapter 6: Sequence and Series
Unit-III: Coordinate Geometry
Chapter 1: Straight Lines
Chapter 2: Conic Sections
Unit-IV: Calculus
Unit-V: Mathematical Reasoning
Unit-VI: Statistics and Probability
Chapter 1: Statistics
Chapter 2: Probability

# Power Set

Power set of the set is defined as the family consisting of all subset of a set.

It is denoted by .

is power set of .

It can be written as

Example:

Number of element in a finite set is denoted by .

Number of elements in Power set of a set having elements is .

Example:

,

.

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