गुणोत्तर श्रेढ़ी \(3,12,48,\ldots\) का (5)वाँ पद क्या है?
What is the (5)th term of the geometric progression \(3,12,48,\ldots\)?
Explanation opens after your attempt
C. (768)
Concept
Here (r=4), so \(a_5=3\cdot4^4=768\). For the (5)th term, the ratio is used (4) times.
Why this answer is correct
The correct answer is C. (768). Here (r=4), so \(a_5=3\cdot4^4=768\). For the (5)th term, the ratio is used (4) times.
Exam Tip
यहाँ (r=4), इसलिए \(a_5=3\cdot4^4=768\)। (5)वें पद के लिए अनुपात (4) बार लगता है।
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