यदि \(a_2=18\) और \(a_6=1458\) है, तो (r) का धनात्मक मान क्या है?
If \(a_2=18\) and \(a_6=1458\), what is the positive value of (r)?
Explanation opens after your attempt
B. (3)
Concept
\(\frac{a_6}{a_2}=r^4=\frac{1458}{18}=81\), so (r=3). In exams, a gap of (4) positions gives \(r^4\).
Why this answer is correct
The correct answer is B. (3). \(\frac{a_6}{a_2}=r^4=\frac{1458}{18}=81\), so (r=3). In exams, a gap of (4) positions gives \(r^4\).
Exam Tip
\(\frac{a_6}{a_2}=r^4=\frac{1458}{18}=81\), इसलिए (r=3) है। परीक्षा में पद-अंतर (4) हो तो \(r^4\) बनेगा।
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