किसी गुणोत्तर श्रेणी में \(a_3=24\) और \(a_6=192\) हैं। यदि (r>0) है, तो पहले (5) पदों का योग क्या होगा?
In a geometric progression, \(a_3=24\) and \(a_6=192\). If (r>0), what is the sum of the first (5) terms?
Explanation opens after your attempt
B. (186)
Concept
From \(\frac{192}{24}=r^3=8\), (r=2) and (a=6). Therefore (S_5=6\(2^5-1\)=186).
Why this answer is correct
The correct answer is B. (186). From \(\frac{192}{24}=r^3=8\), (r=2) and (a=6). Therefore (S_5=6\(2^5-1\)=186).
Exam Tip
\(\frac{192}{24}=r^3=8\) से (r=2) और (a=6) है। इसलिए (S_5=6\(2^5-1\)=186) होगा।
Login to save your score, XP, coins and progress.
