The set of … If two sets have only the same number of elements, then the two sets are One-to-One correspondence. Example 7 Find the pairs of equal sets, if any, give reasons: A = {0}, B = {x : x > 15 and x < 5}, C = {x : x – 5 = 0 }, D = {x: x2 = 25}, E = {x : x is an integral positive root of the equation x2 – 2x –15 = 0}. For example, the set of months with 32 days. Let’s write all the sets in roster form A = {0} A There are some sets that do not contain any element at all. Learn the definition of equal and equivalent sets in set theory. Also, visit CoolGyan to get the definition, set representation and the difference between them with examples The theory is valuable as a basis for precise and adaptable terminology for the definition of complex and sophisticated mathematical concepts. Two sets are equal if they contain the same identical elements. And 3, And 4. And we have checked every element of both sets, so: Yes, they are equal! Am sure that, you will understand the concept very well if you are going through all the points which I have given below on equal sets.After that you will be say your own definition and examples in your own style. We call a set with no elements the null or empty set. its definition and examples and also know which are not equal sets. They both contain 1. They both contain 2. It is represented by the symbol { } or Ø. Some examples of null sets are: The set of dogs with six legs. Example: Are A and B equal where: A is the set whose members are the first four positive whole numbers; B = {4, 2, 1, 3} Let's check. Learn and know everything about equal sets i.e. Set theory, branch of mathematics that deals with the properties of well-defined collections of objects such as numbers or functions.