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)?
Explanation opens after your attempt
B. (3)
Concept
\(\frac{a_5}{a_2}=r^3=\frac{324}{12}=27\), so (r=3). In exams a gap of (3) positions gives \(r^3\).
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 \(r^3\).
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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