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 \(a_9\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (4608)

Step 1

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.

Step 2

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.

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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 \(a_9\)?

Correct Answer: B. (4608). Explanation: तीसरे से नौवें पद तक (6) कदम हैं, इसलिए \(a_9=72\cdot2^6=4608\) है। परीक्षा में पद-संख्या का अंतर गिनें। / There are (6) steps from the third to the ninth term, so \(a_9=72\cdot2^6=4608\). In exams, count the position gap.

Which concept should I revise for this Mathematics MCQ?

There are (6) steps from the third to the ninth term, so \(a_9=72\cdot2^6=4608\). In exams, count the position gap.

What exam hint can help solve this Mathematics question?

तीसरे से नौवें पद तक (6) कदम हैं, इसलिए \(a_9=72\cdot2^6=4608\) है। परीक्षा में पद-संख्या का अंतर गिनें।