यदि \(a_2=12\) और \(a_5=324\) है तो (r) का धनात्मक मान क्या है?

If \(a_2=12\) and \(a_5=324\), what is the positive value of (r)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (3)

Step 1

Concept

\(\frac{a_5}{a_2}=r^3=\frac{324}{12}=27\), so (r=3). In exams a gap of (3) positions gives \(r^3\).

Step 2

Why this answer is correct

The correct answer is B. (3). \(\frac{a_5}{a_2}=r^3=\frac{324}{12}=27\), so (r=3). In exams a gap of (3) positions gives \(r^3\).

Step 3

Exam Tip

\(\frac{a_5}{a_2}=r^3=\frac{324}{12}=27\) इसलिए (r=3) है। परीक्षा में पद-अंतर (3) हो तो \(r^3\) बनेगा।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_2=12\) और \(a_5=324\) है तो (r) का धनात्मक मान क्या है? / If \(a_2=12\) and \(a_5=324\), what is the positive value of (r)?

Correct Answer: B. (3). Explanation: \(\frac{a_5}{a_2}=r^3=\frac{324}{12}=27\) इसलिए (r=3) है। परीक्षा में पद-अंतर (3) हो तो \(r^3\) बनेगा। / \(\frac{a_5}{a_2}=r^3=\frac{324}{12}=27\), so (r=3). In exams a gap of (3) positions gives \(r^3\).

Which concept should I revise for this Mathematics MCQ?

\(\frac{a_5}{a_2}=r^3=\frac{324}{12}=27\), so (r=3). In exams a gap of (3) positions gives \(r^3\).

What exam hint can help solve this Mathematics question?

\(\frac{a_5}{a_2}=r^3=\frac{324}{12}=27\) इसलिए (r=3) है। परीक्षा में पद-अंतर (3) हो तो \(r^3\) बनेगा।