गुणोत्तर श्रेढ़ी में \(a_2=32\) और \(a_6=8192\) है। धनात्मक (r) के लिए \(a_1\) क्या होगा?
In a geometric progression, \(a_2=32\) and \(a_6=8192\). For positive (r), what will \(a_1\) be?
Explanation opens after your attempt
C. (8)
Concept
\(a_6=a_2r^4\), so \(8192=32r^4\) and (r=4), hence \(a_1=8\). First find the ratio and then move backward.
Why this answer is correct
The correct answer is C. (8). \(a_6=a_2r^4\), so \(8192=32r^4\) and (r=4), hence \(a_1=8\). First find the ratio and then move backward.
Exam Tip
\(a_6=a_2r^4\), इसलिए \(8192=32r^4\) और (r=4), अतः \(a_1=8\)। पहले अनुपात निकालें फिर पीछे जाएं।
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