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The part between (3) and (9) is shaded on the number line with open dots at both (3) and (9). Which interval notation is correct?संख्या रेखा पर (3) और (9) के बीच का भाग छायांकित है तथा (3) पर खुला और (9) पर खुला बिंदु है। सही interval notation कौन-सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((3,9))((3,9))
Both open dots show that both endpoints are excluded. In exams write an open-open segment using round brackets.दोनों खुले बिंदु बताते हैं कि दोनों endpoints शामिल नहीं हैं। परीक्षा में open-open segment को round brackets से लिखें।
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