यदि \(a_1=7\) और \(a_{n+1}=a_n+4n+1\) है तो \(a_4\) क्या होगा?
If \(a_1=7\) and \(a_{n+1}=a_n+4n+1\), what is \(a_4\)?
Explanation opens after your attempt
D. (34)
Concept
The terms are (7,12,21,34), so \(a_4=34\). Exam tip: calculate (4n+1) first and then add.
Why this answer is correct
The correct answer is D. (34). The terms are (7,12,21,34), so \(a_4=34\). Exam tip: calculate (4n+1) first and then add.
Exam Tip
पद (7,12,21,34) हैं इसलिए \(a_4=34\) है। पहले (4n+1) निकालें फिर जोड़ें।
Login to save your score, XP, coins and progress.
