यदि (a=3) और \(a_7=192\) है तथा (r) धनात्मक है तो (r) क्या होगा?
If (a=3) and \(a_7=192\), and (r) is positive, what is (r)?
Explanation opens after your attempt
Correct Answer
A. (2)
Concept
From \(192=3r^6\), \(r^6=64=2^6\) so (r=2). In exams use \(r^6\) for the seventh term.
Why this answer is correct
The correct answer is A. (2). From \(192=3r^6\), \(r^6=64=2^6\) so (r=2). In exams use \(r^6\) for the seventh term.
Exam Tip
\(192=3r^6\) से \(r^6=64=2^6\) इसलिए (r=2) है। परीक्षा में सातवें पद के लिए \(r^6\) लगाएँ।
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