यदि \(a_3=72\) और (r=2) है, तो \(a_9\) का मान क्या होगा?
If \(a_3=72\) and (r=2), what is the value of \(a_9\)?
Explanation opens after your attempt
B. (4608)
Concept
There are (6) steps from the third to the ninth term, so \(a_9=72\cdot2^6=4608\). In exams, count the position gap.
Why this answer is correct
The correct answer is B. (4608). There are (6) steps from the third to the ninth term, so \(a_9=72\cdot2^6=4608\). In exams, count the position gap.
Exam Tip
तीसरे से नौवें पद तक (6) कदम हैं, इसलिए \(a_9=72\cdot2^6=4608\) है। परीक्षा में पद-संख्या का अंतर गिनें।
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