गुणोत्तर श्रेढ़ी \(3,12,48,\ldots\) में \(a_5\) क्या होगा?
In the geometric progression \(3,12,48,\ldots\), what is \(a_5\)?
Explanation opens after your attempt
C. (768)
Concept
The common ratio is (4), so \(a_5=3\cdot4^4=768\). For the fifth term the ratio is used (4) times.
Why this answer is correct
The correct answer is C. (768). The common ratio is (4), so \(a_5=3\cdot4^4=768\). For the fifth term the ratio is used (4) times.
Exam Tip
सार्व अनुपात (4) है, इसलिए \(a_5=3\cdot4^4=768\)। (5)वें पद के लिए (4) बार अनुपात लगता है।
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