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Identify Sets (Part-1) - Solution Video Lecture | Sets and Functions - JEE

FAQs on Identify Sets (Part-1) - Solution Video Lecture - Sets and Functions - JEE

1. What is the significance of sets in mathematics?
Ans. Sets are an essential concept in mathematics that allows us to group objects or elements together based on common characteristics. They help in organizing and categorizing data, solving problems, and forming the foundation of various mathematical theories.
2. How are sets represented and written in mathematical notation?
Ans. In mathematical notation, sets are represented by listing their elements inside curly braces {}. For example, a set containing the numbers 1, 2, and 3 can be written as {1, 2, 3}. Additionally, we can use set-builder notation to define a set based on a certain condition or rule.
3. What is the cardinality of a set?
Ans. The cardinality of a set refers to the number of elements it contains. It is denoted by |A|, where A is the set. For example, if a set A has 5 elements, then its cardinality is represented as |A| = 5.
4. How do we determine if two sets are equal?
Ans. Two sets are considered equal if they have exactly the same elements. In other words, if every element of set A is also an element of set B, and vice versa, then we can say that A equals B. This can be expressed as A = B.
5. What is the power set of a set?
Ans. The power set of a set is the set that contains all possible subsets of the original set. It includes the empty set and the set itself. For example, if we have a set A = {1, 2}, then its power set is P(A) = { {}, {1}, {2}, {1, 2} }. The power set has a total of 2^n subsets, where n is the number of elements in the original set.
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