यदि \(a_6=224\) और (a=7) है तथा (r) धनात्मक है तो (r) क्या होगा?
If \(a_6=224\) and (a=7), and (r) is positive, what is (r)?
Explanation opens after your attempt
A. (2)
Concept
From \(224=7r^5\), \(r^5=32=2^5\), so (r=2). In exams identify \(r^5\) for the sixth term.
Why this answer is correct
The correct answer is A. (2). From \(224=7r^5\), \(r^5=32=2^5\), so (r=2). In exams identify \(r^5\) for the sixth term.
Exam Tip
\(224=7r^5\) से \(r^5=32=2^5\) इसलिए (r=2) है। परीक्षा में छठे पद के लिए \(r^5\) पहचानें।
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