Question
Download Solution PDFএকটি গুণোত্তর প্রগতির 5টি পদের যোগফল নির্ণয় করুন, যার প্রদত্ত প্রথম পদ হল 14 এবং সাধারণ অনুপাত হল 5
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
প্রথম পদ (a) = 14
সাধারণ অনুপাত(r) = 5
অনুসৃত সূত্র:
n পদের যোগফল = \(a\times \dfrac{(r^n -1)}{(r-1)} \)
গণনা:
Sn = \(a\times \dfrac{(r^n -1)}{(r-1)} \)
⇒ \(14\times \dfrac{(5^5-1)}{(5-1)}\)
⇒ \(14\times \dfrac{3124}{4}\) = 10934
∴ সঠিক উত্তর হল 10934
Last updated on Jun 5, 2025
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