यदि \(a_1=3\), \(a_2=4\) और \(a_n=a_{n-1}+a_{n-2}+2n\) है तो \(a_3\) क्या होगा?
If \(a_1=3\), \(a_2=4\), and \(a_n=a_{n-1}+a_{n-2}+2n\), what is \(a_3\)?
Explanation opens after your attempt
B. (13)
Concept
\(a_3=4+3+2\times3=13\). Exam tip: add current (2n) with the previous two terms.
Why this answer is correct
The correct answer is B. (13). \(a_3=4+3+2\times3=13\). Exam tip: add current (2n) with the previous two terms.
Exam Tip
\(a_3=4+3+2\times3=13\) है। पिछले दो पदों के साथ वर्तमान (2n) जोड़ें।
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