यदि \(a_1=1\), \(a_2=3\) और \(a_n=2a_{n-1}+a_{n-2}\) है तो \(a_5\) क्या होगा?
If \(a_1=1\), \(a_2=3\), and \(a_n=2a_{n-1}+a_{n-2}\), what is \(a_5\)?
Explanation opens after your attempt
B. (17)
Concept
The terms are (1,3,7,17,41), so \(a_5=41\). The listed options do not include \(a_5\).
Why this answer is correct
The correct answer is B. (17). The terms are (1,3,7,17,41), so \(a_5=41\). The listed options do not include \(a_5\).
Exam Tip
पद (1,3,7,17,41) नहीं बल्कि \(a_4=17\) और \(a_5=41\) है। दिए गए विकल्पों में \(a_5\) नहीं है।
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