The set I = {1, 1, 2, 2, 3} is actually equal to which set?
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Answer and explanation
Correct answer: {1, 2, 3}
In a set, repetition does not create a new element; each element is counted only once. Removing the repeated 1 and 2 from {1, 1, 2, 2, 3} leaves {1, 2, 3}. Therefore, the set has three distinct elements and option A is correct.
Frequently asked questions
What is the correct answer to this question?
{1, 2, 3}
Why is this the correct answer?
In a set, repetition does not create a new element; each element is counted only once. Removing the repeated 1 and 2 from {1, 1, 2, 2, 3} leaves {1, 2, 3}. Therefore, the set has three distinct elements and 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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