Which number does not belong to the interval [2, 5]?
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Answer and explanation
Correct answer: 6
The closed interval [2, 5] contains every real number x satisfying 2 ≤ x ≤ 5. Square brackets show that both endpoints, 2 and 5, are included. The numbers 2 and 4 are inside the interval, and 5 is included as the right endpoint. The number 6 is greater than 5, so it lies outside the interval. Therefore D is correct.
Frequently asked questions
What is the correct answer to this question?
6
Why is this the correct answer?
The closed interval [2, 5] contains every real number x satisfying 2 ≤ x ≤ 5. Square brackets show that both endpoints, 2 and 5, are included. The numbers 2 and 4 are inside the interval, and 5 is included as the right endpoint. The number 6 is greater than 5, so it lies outside the interval. Therefore D is correct.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Equal sets and Subsets.
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