यदि \(a_1=2\), \(a_2=9\) और \(a_n=a_{n-1}+a_{n-2}\) है तो \(a_5\) क्या होगा?
If \(a_1=2\), \(a_2=9\), and \(a_n=a_{n-1}+a_{n-2}\), what is \(a_5\)?
Explanation opens after your attempt
C. (31)
Concept
The terms are (2,9,11,20,31), so \(a_5=31\). Exam tip: write positions while adding previous two terms.
Why this answer is correct
The correct answer is C. (31). The terms are (2,9,11,20,31), so \(a_5=31\). Exam tip: write positions while adding previous two terms.
Exam Tip
पद (2,9,11,20,31) हैं इसलिए \(a_5=31\) है। पिछले दो पदों को जोड़ते समय क्रमांक लिखें।
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