##### Asked by: Sohayb Roussel

asked in category: General Last Updated: 6th March, 2020# What are ordered and unordered pairs?

**unordered pair**or

**pair**set is a set of the form {a, b}, i.e. a set having two elements a and b with no particular relation between them. In contrast, an

**ordered pair**(a, b) has a as its first element and b as its second element.

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In respect to this, how many unordered pairs are there?

If A has four elements, the number of its companions is the number of subsets of a set of elements which is . As before, the **unordered pairs** amount to 40.

are sets unordered? Definition: A **set** is an **unordered** collection of objects without duplicates. The objects in a **set** are called elements or members.

Similarly, what is ordered pair in sets?

The **pair** of elements that occur in particular order and are enclosed in brackets are called a **set** of **ordered pairs**. • If 'a' and 'b' are two elements, then the two different **pairs** are (a, b); (b, a) and (a, b); (b, a). • In an **ordered pair** (a, b), a is called the first component and b is called the second component.

What is the difference between a set and a pair?

**In** mathematics, **pair** indicates a **set** of two elements where the order has not importance: {a,b} and {b,a} are the same **sets**. **In** couple the order matters: (a,b) is not the same (b,a).