यदि \(a_1=2\), \(a_2=7\) और \(a_n=2a_{n-1}+a_{n-2}\) है तो \(a_5\) क्या होगा?
If \(a_1=2\), \(a_2=7\), and \(a_n=2a_{n-1}+a_{n-2}\), what is \(a_5\)?
Explanation opens after your attempt
B. (90)
Concept
The terms are (2,7,16,39,94), so \(a_5=94\). Exam tip: use both previous terms carefully.
Why this answer is correct
The correct answer is B. (90). The terms are (2,7,16,39,94), so \(a_5=94\). Exam tip: use both previous terms carefully.
Exam Tip
पद (2,7,16,39,94) हैं इसलिए \(a_5=94\) है। सही विकल्पों में (94) होना चाहिए।
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