यदि \(a_n=3n+1\) है, तो \(a_4\) का मान क्या होगा?
If \(a_n=3n+1\), what is the value of \(a_4\)?
Explanation opens after your attempt
D. (13)
Concept
\(a_4=3\times4+1=13\). In exams, replace (n) with the term number.
Why this answer is correct
The correct answer is D. (13). \(a_4=3\times4+1=13\). In exams, replace (n) with the term number.
Exam Tip
\(a_4=3\times4+1=13\) है। परीक्षा में (n) की जगह पद संख्या रखें।
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