यदि \(a_3=12\) और \(a_6=96\) है, तथा अनुपात धनात्मक है, तो \(a_8\) क्या होगा?
If \(a_3=12\) and \(a_6=96\), and the ratio is positive, what will \(a_8\) be?
Explanation opens after your attempt
C. (384)
Concept
\(a_6=a_3r^3\), so (r=2), hence \(a_8=96\cdot2^2=384\). First find the ratio and then move forward.
Why this answer is correct
The correct answer is C. (384). \(a_6=a_3r^3\), so (r=2), hence \(a_8=96\cdot2^2=384\). First find the ratio and then move forward.
Exam Tip
\(a_6=a_3r^3\), इसलिए (r=2), अतः \(a_8=96\cdot2^2=384\)। पहले अनुपात निकालकर आगे बढ़ें।
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