Which interval notation represents x > 3?
Answer and explanation
Correct answer: (3, ∞)
The inequality x > 3 means that x can be any real number strictly greater than 3. Since 3 itself is not allowed, a parenthesis is placed at 3. The values continue without bound toward positive infinity, and infinity is never an included number, so a parenthesis is also used there. Hence the interval is (3, ∞).
Frequently asked questions
What is the correct answer to this question?
(3, ∞)
Why is this the correct answer?
The inequality x > 3 means that x can be any real number strictly greater than 3. Since 3 itself is not allowed, a parenthesis is placed at 3. The values continue without bound toward positive infinity, and infinity is never an included number, so a parenthesis is also used there. Hence the interval is (3, ∞).
Which subject and chapter does this question cover?
This is a Class 12 Mathematics question. Chapter: Linear Inequalities. Topic: representation on number line.
