गुणोत्तर श्रेढ़ी \(3,9,27,\ldots\) का (5)वाँ पद क्या है?
What is the (5)th term of the geometric progression \(3,9,27,\ldots\)?
Explanation opens after your attempt
C. (243)
Concept
Here (r=3), so \(a_5=3\cdot3^4=243\). Use \(a_n=ar^{n-1}\) in a geometric progression.
Why this answer is correct
The correct answer is C. (243). Here (r=3), so \(a_5=3\cdot3^4=243\). Use \(a_n=ar^{n-1}\) in a geometric progression.
Exam Tip
यहाँ (r=3), इसलिए \(a_5=3\cdot3^4=243\)। गुणोत्तर श्रेढ़ी में \(a_n=ar^{n-1}\) लगाएं।
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