Which interval represents x ≥ 5?
Answer and explanation
Correct answer: [5, ∞)
The inequality x ≥ 5 includes 5 because equality is allowed, so a square bracket is used at 5. It also includes every real number greater than 5, continuing without upper bound toward infinity. Infinity is not an actual real endpoint, so a round bracket is always used with it. Thus the correct interval is [5, ∞).
Frequently asked questions
What is the correct answer to this question?
[5, ∞)
Why is this the correct answer?
The inequality x ≥ 5 includes 5 because equality is allowed, so a square bracket is used at 5. It also includes every real number greater than 5, continuing without upper bound toward infinity. Infinity is not an actual real endpoint, so a round bracket is always used with it. Thus the correct interval is [5, ∞).
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Sets and their representations.
