यदि \(a_1=3\) और \(a_{n+1}=a_n+2n\) है तो \(a_5\) क्या होगा?
If \(a_1=3\) and \(a_{n+1}=a_n+2n\), what is \(a_5\)?
Explanation opens after your attempt
D. (23)
Concept
The terms are (3,5,9,15,23), so \(a_5=23\). Exam tip: find (2n) first and then add.
Why this answer is correct
The correct answer is D. (23). The terms are (3,5,9,15,23), so \(a_5=23\). Exam tip: find (2n) first and then add.
Exam Tip
पद (3,5,9,15,23) हैं इसलिए \(a_5=23\) है। पहले (2n) निकालें फिर जोड़ें।
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