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Subjects
Class 10MathematicsSetsEqual sets and SubsetsEasyLevel 8

Which inequality correctly represents the interval [3, 9]?

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Answer and explanation

Correct answer: 3 ≤ x ≤ 9

In the interval [3, 9], square brackets are used at both ends. A square bracket means that the endpoint is included. Hence x may be equal to 3 and may also be equal to 9, while every value between them is allowed. The equivalent inequality is 3 ≤ x ≤ 9, so option B is correct.

Tags

closed-intervalinterval-notationinequalitiesreal-numbersEqual sets and SubsetsSetsMathematicsClass 10 MCQ

Frequently asked questions

What is the correct answer to this question?

3 ≤ x ≤ 9

Why is this the correct answer?

In the interval [3, 9], square brackets are used at both ends. A square bracket means that the endpoint is included. Hence x may be equal to 3 and may also be equal to 9, while every value between them is allowed. The equivalent inequality is 3 ≤ x ≤ 9, so option B 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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