यदि (a=13) और \(a_6=416\) है तथा (r) धनात्मक है, तो (r) क्या होगा?
If (a=13) and \(a_6=416\), and (r) is positive, what is (r)?
Explanation opens after your attempt
A. (2)
Concept
From \(416=13r^5\), \(r^5=32=2^5\), so (r=2). In exams, use \(r^5\) for the sixth term.
Why this answer is correct
The correct answer is A. (2). From \(416=13r^5\), \(r^5=32=2^5\), so (r=2). In exams, use \(r^5\) for the sixth term.
Exam Tip
\(416=13r^5\) से \(r^5=32=2^5\), इसलिए (r=2) है। परीक्षा में छठे पद के लिए \(r^5\) लगाएँ।
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