Which number is definitely included in the interval [1, 4]?
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Answer and explanation
Correct answer: 1
The interval [1, 4] is a closed interval because square brackets are used at both ends. A square bracket means that the endpoint is included. Hence, both 1 and 4 belong to this interval, while numbers below 1 or above 4 do not. Among the given choices, 1 is definitely included.
Frequently asked questions
What is the correct answer to this question?
1
Why is this the correct answer?
The interval [1, 4] is a closed interval because square brackets are used at both ends. A square bracket means that the endpoint is included. Hence, both 1 and 4 belong to this interval, while numbers below 1 or above 4 do not. Among the given choices, 1 is definitely included.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Sets. Topic: Sets and their representations.
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