यदि \(a_1=2\), \(a_2=5\) और \(a_n=2a_{n-1}+a_{n-2}\) है तो \(a_5\) क्या होगा?
If \(a_1=2\), \(a_2=5\), and \(a_n=2a_{n-1}+a_{n-2}\), what is \(a_5\)?
Explanation opens after your attempt
C. (70)
Concept
The terms are (2,5,12,29,70), so \(a_5=70\). Exam tip: use both previous terms in a two-term rule.
Why this answer is correct
The correct answer is C. (70). The terms are (2,5,12,29,70), so \(a_5=70\). Exam tip: use both previous terms in a two-term rule.
Exam Tip
पद (2,5,12,29,70) हैं इसलिए \(a_5=70\) है। दो-पद नियम में दोनों पिछले पदों का उपयोग करें।
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