यदि \(a_1=5\) और \(a_{n+1}=2a_n+n^2\) है तो \(a_4\) क्या होगा?
If \(a_1=5\) and \(a_{n+1}=2a_n+n^2\), what is \(a_4\)?
Explanation opens after your attempt
C. (61)
Concept
The terms are (5,11,26,61), so \(a_4=61\). Exam tip: double first and then add \(n^2\).
Why this answer is correct
The correct answer is C. (61). The terms are (5,11,26,61), so \(a_4=61\). Exam tip: double first and then add \(n^2\).
Exam Tip
पद (5,11,26,61) हैं इसलिए \(a_4=61\) है। पहले दोगुना करें फिर \(n^2\) जोड़ें।
Login to save your score, XP, coins and progress.
