यदि \(p_1=2\) और \(p_n=p_{n-1}+n^2+n+1\) है, तो \(p_5\) का मान क्या होगा?
If \(p_1=2\) and \(p_n=p_{n-1}+n^2+n+1\), what is the value of \(p_5\)?
Explanation opens after your attempt
B. चौहत्तर(74)
Concept
\(p_5=2+7+13+21+31=74\). In exams, simplify \(n^2+n+1\) first and then add.
Why this answer is correct
The correct answer is B. चौहत्तर / (74). \(p_5=2+7+13+21+31=74\). In exams, simplify \(n^2+n+1\) first and then add.
Exam Tip
\(p_5=2+7+13+21+31=74\) है। परीक्षा में \(n^2+n+1\) को पहले सरल करके जोड़ें।
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