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Which interval is correct for (-7\le x\le -1) on the number line?संख्या रेखा पर (-7\le x\le -1) के लिए सही अंतराल कौन सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ([-7,-1])([-7,-1])
Equality is included on both sides, so both endpoints are included. In this case, square brackets are used at both ends.दोनों ओर बराबरी शामिल है इसलिए दोनों सीमाएँ शामिल होंगी। ऐसे में दोनों सिरों पर वर्ग कोष्ठक लगते हैं।
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