यदि \(a_1=6\), \(a_2=10\) और \(a_n=2a_{n-1}+a_{n-2}-n\) है तो \(a_3\) क्या होगा?
If \(a_1=6\), \(a_2=10\), and \(a_n=2a_{n-1}+a_{n-2}-n\), what is \(a_3\)?
Explanation opens after your attempt
B. (23)
Concept
\(a_3=2\times10+6-3=23\). Exam tip: subtract the current (n) in this two-term rule.
Why this answer is correct
The correct answer is B. (23). \(a_3=2\times10+6-3=23\). Exam tip: subtract the current (n) in this two-term rule.
Exam Tip
\(a_3=2\times10+6-3=23\) है। दो-पद नियम में वर्तमान (n) भी घटाएँ।
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