गुणोत्तर श्रेढ़ी में \(a_3=18\) और \(a_6=486\) है। धनात्मक सार्व अनुपात (r) क्या होगा?
In a geometric progression, \(a_3=18\) and \(a_6=486\). What is the positive common ratio (r)?
Explanation opens after your attempt
B. (3)
Concept
\(a_6=a_3r^3\), so \(486=18r^3\) and (r=3). Use the gap between term positions as the exponent.
Why this answer is correct
The correct answer is B. (3). \(a_6=a_3r^3\), so \(486=18r^3\) and (r=3). Use the gap between term positions as the exponent.
Exam Tip
\(a_6=a_3r^3\), इसलिए \(486=18r^3\) और (r=3)। पदों की दूरी को घात बनाएं।
Login to save your score, XP, coins and progress.
