If A = (1, 4), which of the following elements belongs to A?
Answer and explanation
Correct answer: 3/2
The open interval (1, 4) contains every real number strictly greater than 1 and strictly less than 4. The number 3/2 equals 1.5, so it lies between 1 and 4 and belongs to A. The endpoints 1 and 4 are excluded because the interval uses round parentheses, while 5 lies outside the interval. Therefore B is the only correct choice.
Frequently asked questions
What is the correct answer to this question?
3/2
Why is this the correct answer?
The open interval (1, 4) contains every real number strictly greater than 1 and strictly less than 4. The number 3/2 equals 1.5, so it lies between 1 and 4 and belongs to A. The endpoints 1 and 4 are excluded because the interval uses round parentheses, while 5 lies outside the interval. Therefore B is the only correct choice.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Equal sets and Subsets.
