यदि \(a_1=1\), \(a_2=4\) और \(a_n=a_{n-1}+2a_{n-2}\) है तो \(a_5\) क्या होगा?
If \(a_1=1\), \(a_2=4\), and \(a_n=a_{n-1}+2a_{n-2}\), what is \(a_5\)?
Explanation opens after your attempt
C. (26)
Concept
The terms are (1,4,6,14,26), so \(a_5=26\). Exam tip: multiply the second previous term by (2).
Why this answer is correct
The correct answer is C. (26). The terms are (1,4,6,14,26), so \(a_5=26\). Exam tip: multiply the second previous term by (2).
Exam Tip
पद (1,4,6,14,26) हैं इसलिए \(a_5=26\) है। पिछले दो पदों में दूसरे पिछले पद को (2) से गुणा करें।
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