Which of the following pairs represents equal sets?
Answer and explanation
Correct answer: A = {1, 2, 3}, B = {3, 2, 1, 2}
Two sets are equal when they contain exactly the same distinct elements; the order of listing and repetition do not matter. In option A, A contains 1, 2, and 3, while B also contains the same distinct elements because the repeated 2 is counted only once. Thus A = B. Every other option has at least one different or additional element.
Frequently asked questions
What is the correct answer to this question?
A = {1, 2, 3}, B = {3, 2, 1, 2}
Why is this the correct answer?
Two sets are equal when they contain exactly the same distinct elements; the order of listing and repetition do not matter. In option A, A contains 1, 2, and 3, while B also contains the same distinct elements because the repeated 2 is counted only once. Thus A = B. Every other option has at least one different or additional element.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Sets and their representations.
