यदि (a=6) और \(a_7=384\) है तथा (r) धनात्मक है, तो (r) क्या होगा?
If (a=6) and \(a_7=384\), and (r) is positive, what is (r)?
Explanation opens after your attempt
Correct Answer
A. (2)
Concept
From \(384=6r^6\), \(r^6=64=2^6\), so (r=2). In exams, use \(r^6\) for the seventh term.
Why this answer is correct
The correct answer is A. (2). From \(384=6r^6\), \(r^6=64=2^6\), so (r=2). In exams, use \(r^6\) for the seventh term.
Exam Tip
\(384=6r^6\) से \(r^6=64=2^6\), इसलिए (r=2) है। परीक्षा में सातवें पद के लिए \(r^6\) लगाएँ।
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