Which interval includes both endpoints?
Answer and explanation
Correct answer: [a, b]
An interval includes an endpoint when a square bracket is placed next to that endpoint. In the interval [a, b], square brackets appear on both sides, so both a and b are included. This is called a closed interval. By contrast, (a, b) excludes both endpoints, while [a, b) and (a, b] include only one endpoint each.
Frequently asked questions
What is the correct answer to this question?
[a, b]
Why is this the correct answer?
An interval includes an endpoint when a square bracket is placed next to that endpoint. In the interval [a, b], square brackets appear on both sides, so both a and b are included. This is called a closed interval. By contrast, (a, b) excludes both endpoints, while [a, b) and (a, b] include only one endpoint each.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Sets and their representations.
