किसी अनुक्रम में \(R_1=2\) और \(R_n=nR_{n-1}+n\) है। \(R_4\) का मान क्या होगा?
In a sequence, \(R_1=2\) and \(R_n=nR_{n-1}+n\). What is the value of \(R_4\)?
Explanation opens after your attempt
C. अठासी(88)
Concept
\(R_2=6\), \(R_3=21\), and \(R_4=88\). In exams, both multiply by (n) and add (n).
Why this answer is correct
The correct answer is C. अठासी / (88). \(R_2=6\), \(R_3=21\), and \(R_4=88\). In exams, both multiply by (n) and add (n).
Exam Tip
\(R_2=6\), \(R_3=21\) और \(R_4=88\) है। परीक्षा में (n) से गुणा और (n) जोड़ना दोनों करें।
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