Which statement is correct for the interval [3, 7)?
Answer and explanation
Correct answer: 3 is included and 7 is not included
The square bracket in [3, 7) means that the left endpoint 3 belongs to the interval. The round bracket after 7 means that 7 is excluded. In inequality form, the interval is 3 ≤ x < 7, so it contains 3 but not 7. Consequently, option A is correct. The other choices reverse or ignore the meanings of the brackets.
Frequently asked questions
What is the correct answer to this question?
3 is included and 7 is not included
Why is this the correct answer?
The square bracket in [3, 7) means that the left endpoint 3 belongs to the interval. The round bracket after 7 means that 7 is excluded. In inequality form, the interval is 3 ≤ x < 7, so it contains 3 but not 7. Consequently, option A is correct. The other choices reverse or ignore the meanings of the brackets.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Sets and their representations.
