If J = {3, 1, 2} and K = {1, 2, 3}, which statement is correct?
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Answer and explanation
Correct answer: J = K
The order in which elements are written does not matter in a set. Both J and K contain exactly the same distinct elements: 1, 2, and 3. Consequently, they are equal and have the same cardinality. Option B incorrectly treats sets like ordered lists, so option A is correct.
Frequently asked questions
What is the correct answer to this question?
J = K
Why is this the correct answer?
The order in which elements are written does not matter in a set. Both J and K contain exactly the same distinct elements: 1, 2, and 3. Consequently, they are equal and have the same cardinality. Option B incorrectly treats sets like ordered lists, so option A is correct.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Common Questions. Topic: General chapter practice.
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