यदि \(a_1=4\) और \(a_{n+1}=2a_n+n\) है तो \(a_4\) क्या होगा?
If \(a_1=4\) and \(a_{n+1}=2a_n+n\), what is \(a_4\)?
Explanation opens after your attempt
C. (43)
Concept
The terms are (4,9,20,43), so \(a_4=43\). Exam tip: double the previous term first and then add (n).
Why this answer is correct
The correct answer is C. (43). The terms are (4,9,20,43), so \(a_4=43\). Exam tip: double the previous term first and then add (n).
Exam Tip
पद (4,9,20,43) हैं इसलिए \(a_4=43\) है। पहले पिछले पद को दोगुना करें फिर (n) जोड़ें।
Login to save your score, XP, coins and progress.
