गुणोत्तर श्रेढ़ी में \(a_4=54\) और \(a_7=1458\) है। धनात्मक सार्व अनुपात (r) क्या होगा?
In a geometric progression, \(a_4=54\) and \(a_7=1458\). What will be the positive common ratio (r)?
Explanation opens after your attempt
B. (3)
Concept
\(a_7=a_4r^3\), so \(1458=54r^3\) and (r=3). Use the gap between term positions as the exponent.
Why this answer is correct
The correct answer is B. (3). \(a_7=a_4r^3\), so \(1458=54r^3\) and (r=3). Use the gap between term positions as the exponent.
Exam Tip
\(a_7=a_4r^3\), इसलिए \(1458=54r^3\) और (r=3)। पदों की दूरी को घात बनाएं।
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