यदि \(a_2=20\) और \(a_6=5120\) है, तो (r) का धनात्मक मान क्या है?

If \(a_2=20\) and \(a_6=5120\), what is the positive value of (r)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (4)

Step 1

Concept

\(\frac{a_6}{a_2}=r^4=\frac{5120}{20}=256\), so (r=4). In exams, a gap of (4) positions gives \(r^4\).

Step 2

Why this answer is correct

The correct answer is C. (4). \(\frac{a_6}{a_2}=r^4=\frac{5120}{20}=256\), so (r=4). In exams, a gap of (4) positions gives \(r^4\).

Step 3

Exam Tip

\(\frac{a_6}{a_2}=r^4=\frac{5120}{20}=256\), इसलिए (r=4) है। परीक्षा में पद-अंतर (4) हो तो \(r^4\) बनेगा।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_2=20\) और \(a_6=5120\) है, तो (r) का धनात्मक मान क्या है? / If \(a_2=20\) and \(a_6=5120\), what is the positive value of (r)?

Correct Answer: C. (4). Explanation: \(\frac{a_6}{a_2}=r^4=\frac{5120}{20}=256\), इसलिए (r=4) है। परीक्षा में पद-अंतर (4) हो तो \(r^4\) बनेगा। / \(\frac{a_6}{a_2}=r^4=\frac{5120}{20}=256\), so (r=4). In exams, a gap of (4) positions gives \(r^4\).

Which concept should I revise for this Mathematics MCQ?

\(\frac{a_6}{a_2}=r^4=\frac{5120}{20}=256\), so (r=4). In exams, a gap of (4) positions gives \(r^4\).

What exam hint can help solve this Mathematics question?

\(\frac{a_6}{a_2}=r^4=\frac{5120}{20}=256\), इसलिए (r=4) है। परीक्षा में पद-अंतर (4) हो तो \(r^4\) बनेगा।