गुणोत्तर श्रेढ़ी में \(a_3=24\) और \(a_6=648\) है। \(a_4\) का मान क्या होगा?
In a geometric progression, \(a_3=24\) and \(a_6=648\). What is the value of \(a_4\)?
Explanation opens after your attempt
B. (72)
Concept
\(a_6=a_3r^3\), so \(648=24r^3\) and (r=3), hence \(a_4=72\). First find the ratio and then form the next term.
Why this answer is correct
The correct answer is B. (72). \(a_6=a_3r^3\), so \(648=24r^3\) and (r=3), hence \(a_4=72\). First find the ratio and then form the next term.
Exam Tip
\(a_6=a_3r^3\), इसलिए \(648=24r^3\) और (r=3), अतः \(a_4=72\)। पहले अनुपात निकालें फिर अगला पद बनाएं।
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