गुणोत्तर श्रेणी \(1024,512,256,128,\ldots\) का नौवाँ पद क्या है?
What is the ninth term of the geometric progression \(1024,512,256,128,\ldots\)?
Explanation opens after your attempt
Correct Answer
B. (4)
Concept
Here \(r=\frac{1}{2}\), so (a_9=1024\cdot\left\(\frac{1}{2}\right\)8=4). In exams, apply fractional ratios carefully in decreasing GPs.
Why this answer is correct
The correct answer is B. (4). Here \(r=\frac{1}{2}\), so (a_9=1024\cdot\left\(\frac{1}{2}\right\)8=4). In exams, apply fractional ratios carefully in decreasing GPs.
Exam Tip
यहाँ \(r=\frac{1}{2}\) है, इसलिए (a_9=1024\cdot\left\(\frac{1}{2}\right\)8=4) है। परीक्षा में घटती GP में भिन्न अनुपात सावधानी से लगाएँ।
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