यदि \(Q_1=2\), \(Q_2=5\) और \(Q_n=Q_{n-1}+2Q_{n-2}+n\) है, तो \(Q_5\) का मान क्या होगा?
If \(Q_1=2\), \(Q_2=5\), and \(Q_n=Q_{n-1}+2Q_{n-2}+n\), what is the value of \(Q_5\)?
Explanation opens after your attempt
A. पचपन(55)
Concept
\(Q_3=12\), \(Q_4=26\), and \(Q_5=55\). In exams, do not forget to double the second previous term.
Why this answer is correct
The correct answer is A. पचपन / (55). \(Q_3=12\), \(Q_4=26\), and \(Q_5=55\). In exams, do not forget to double the second previous term.
Exam Tip
\(Q_3=12\), \(Q_4=26\) और \(Q_5=55\) है। परीक्षा में दूसरे पिछले पद को दोगुना करना न भूलें।
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