संख्या रेखा पर ([-3,9]\setminus(2,7]) का सही परिणाम कौन-सा है?

What is the correct result of ([-3,9]\setminus(2,7]) on the number line?

Explanation opens after your attempt
Correct Answer

A. ([-3,2]\cup(7,9])

Step 1

Concept

The removed part does not remove (2), but it removes (7). In exams, pay attention to the endpoints removed in set difference.

Step 2

Why this answer is correct

The correct answer is A. ([-3,2]\cup(7,9]). The removed part does not remove (2), but it removes (7). In exams, pay attention to the endpoints removed in set difference.

Step 3

Exam Tip

हटाया गया भाग (2) को नहीं हटाता पर (7) को हटाता है। परीक्षा में set difference में हटने वाले endpoints पर ध्यान दें।

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Mathematics Answer, Explanation and Revision Hints

संख्या रेखा पर ([-3,9]\setminus(2,7]) का सही परिणाम कौन-सा है? / What is the correct result of ([-3,9]\setminus(2,7]) on the number line?

Correct Answer: A. ([-3,2]\cup(7,9]). Explanation: हटाया गया भाग (2) को नहीं हटाता पर (7) को हटाता है। परीक्षा में set difference में हटने वाले endpoints पर ध्यान दें। / The removed part does not remove (2), but it removes (7). In exams, pay attention to the endpoints removed in set difference.

Which concept should I revise for this Mathematics MCQ?

The removed part does not remove (2), but it removes (7). In exams, pay attention to the endpoints removed in set difference.

What exam hint can help solve this Mathematics question?

हटाया गया भाग (2) को नहीं हटाता पर (7) को हटाता है। परीक्षा में set difference में हटने वाले endpoints पर ध्यान दें।