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Sep 8, 2022 · Examples of Sets in Real Life. Most of us have collections of our favorite things, groups of objects, like our favorite clothes, favorite foods, favorite people and places, etc. These are all parts of sets, and we use them every day. Here are a few examples of sets that are frequently used in our daily lives: 2, 3. Bookcase.
- What Is A Set?
- Set Definition
- Elements of A Set
- Representation of Sets
- Visual Representation of Sets Using Venn Diagram
- Sets Formulas
- Solved Examples
We commonly use the terms like ‘a complete set of novels’ or ‘a set of cutlery’ in day-to-day life. What do we mean by the term ‘set’ here? It simply defines a collection of objects or things of the same type. Sets in math are also defined in the similar context.
In mathematics, a set is defined as a collection of distinct, well-defined objects forming a group. There can be any number of items, be it a collection of whole numbers, months of a year, types of birds, and so on. Each item in the set is known as an element of the set. We use curly brackets while writing a set. Consider an example of a set. A={1,...
Elements or members are the terms or items present in a set. They are enclosed in curly brackets and separated by commas. To represent that an element is contained in a set, we use the symbol “∈.” It is read as ‘belongs to.’ Suppose we have a set of even natural numbers less than 10. A={2,4,6,8}. Here, 2∈A but 3∉A.
We represent the sets in different ways. The only difference is in the way in which the elements are listed. The different forms of representing sets are discussed below.
The pictorial representation of sets represented as circles is known as the Venn diagram. The elements of the sets are inside the circles. The rectangle that encloses the circles represents the universal set. The Venn diagram represents how the sets are related to each other.
There are some set formulas that we can use to find the number of elements. For sets A and B, 1. n(AUB)=n(A)+n(B)–n(A∩B) 2. n(A−B)=n(AUB)−n(B) 3. n(A−B)=n(A)−n(A∩B)
1. How many elements are there in the set A={x:xis a perfect square less than 30}? Solution: A={1,4,9,16,25} n(A)=5 2. Arrange the set A={y:y2=36;yis an integer}in roster form. Solution: y2=36⇒y2−36=0⇒y=±6 A=–6,6 3. Write the set B={1,2,5,10,17}in set builder form. Solution: 02+1=1 12+1=2 22+1=5 32+1=10 42+1=17 So, in roaster form B={y:y2+1,y<5} 4....
- Kitchen sets. The kitchen is that place of the house where you can find numerous kinds of sets. You must have seen your mom organizing each kitchen cabinet with one particular item.
- School rules. Every school, or even a workplace, has some rules which students and workers must follow on any given day. These rules are a set of well-defined statements that tell people what they are and aren’t allowed to do.
- Your favorite playlist. We’re sure you must be having a playlist on your cell phone with all your favorites. Right? This playlist is also a set of songs that you especially like.
- Grade-level school books. Each grade level has a fixed curriculum to follow, so the books for each grade level are also different. Books suitable for each grade level make a distinct set.
- Sets Definition. In mathematics, a set is defined as a well-defined collection of objects. Sets are named and represented using capital letters. In the set theory, the elements that a set comprises can be any kind of thing: people, letters of the alphabet, numbers, shapes, variables, etc.
- Representation of Sets in Set Theory. There are different set notations used for the representation of sets in set theory. They differ in the way in which the elements are listed.
- Sets Symbols. Set symbols are used to define the elements of a given set. The following table shows the set theory symbols and their meaning. Symbols. Meaning.
- Types of Sets. There are different types of sets in set theory. Some of these are singleton, finite, infinite, empty, etc. Singleton Sets. A set that has only one element is called a singleton set or also called a unit set.
Theorem 1.1.1 1.1. 1. Two sets A A and B B are equal if and only if A ⊂ B A ⊂ B and B ⊂ A B ⊂ A. If A ⊂ B A ⊂ B and A A does not equal B B, we say that A A is a proper subset of B B, and write A ⊊ B A ⊊ B. The set θ = {x: x ≠ x} θ = {x: x ≠ x} is called the empty set. This set clearly has no elements.
May 27, 2024 · Set Theory is a branch of logical mathematics that studies the collection of objects and operations based on it. A set is simply a collection of objects or a group of objects. For example, a group of players in a football team is a set and the players in the team are its objects. The words collection, aggregate, and class are synonymous with set.
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In sets it does not matter what order the elements are in. Example: {1,2,3,4} is the same set as {3,1,4,2} When we say order in sets we mean the size of the set. Another (better) name for this is cardinality. A finite set has finite order (or cardinality). An infinite set has infinite order (or cardinality).
