किस विकल्प में \(x\in [-9,-2\)) का सही संख्या रेखा संकेत है?
Which option gives the correct number line indication for \(x\in [-9,-2\))?
Explanation opens after your attempt
B. (-9) बंद और (-2) खुला(-9) closed and (-2) open
Concept
(-9) has a square bracket so it is included and (-2) has a parenthesis so it is excluded. This decides the endpoints.
Why this answer is correct
The correct answer is B. (-9) बंद और (-2) खुला / (-9) closed and (-2) open. (-9) has a square bracket so it is included and (-2) has a parenthesis so it is excluded. This decides the endpoints.
Exam Tip
(-9) के साथ वर्ग कोष्ठक है इसलिए वह शामिल है और (-2) के साथ गोल कोष्ठक है इसलिए वह शामिल नहीं है। यही सिरों को तय करता है।
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