Which endpoint is included in the interval (5, 10]?
Answer and explanation
Correct answer: Only 10
Interval notation uses round parentheses for excluded endpoints and square brackets for included endpoints. In (5, 10], the parenthesis at 5 excludes 5, while the square bracket at 10 includes 10. Thus only 10 is an included endpoint. Option B is correct; option C wrongly includes 5, and A reverses the bracket meanings. D excludes both and is also incorrect.
Frequently asked questions
What is the correct answer to this question?
Only 10
Why is this the correct answer?
Interval notation uses round parentheses for excluded endpoints and square brackets for included endpoints. In (5, 10], the parenthesis at 5 excludes 5, while the square bracket at 10 includes 10. Thus only 10 is an included endpoint. Option B is correct; option C wrongly includes 5, and A reverses the bracket meanings. D excludes both and is also incorrect.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Equal sets and Subsets.
