Question
Download Solution PDFনিম্নলিখিত কোনটি \(\sqrt{5}\) এবং \(\sqrt{7}\) এর মধ্যে একটি মূলদ সংখ্যা?
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√ 5 এবং √ 7
ধারণা
মূলদ সংখ্যা হলো সেই সংখ্যাগুলি যা সমাপ্ত, অ সমাপ্ত বা পুনরাবৃত্ত হয়।
গণনা
√5 = 2.236 এবং √7 = 2.64
মূলদ সংখ্যা 2.33... এবং 2.64... এর মধ্যে অবস্থিত
সুতরাং, শুধুমাত্র \(2{2\over5}\) হলো সেই সংখ্যা যা 2.33 এবং 2.64 এর মধ্যে অবস্থিত।
∴ \(2{2\over5}\) \(\sqrt{5}\) এবং \(\sqrt{7}\) এর মধ্যে একটি হলো মূলদ সংখ্যা।
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