किसी अनुक्रम में \(F_1=20\) और \(F_n=F_{n-1}-2n+1\) है। \(F_5\) का मान क्या होगा?
In a sequence, \(F_1=20\) and \(F_n=F_{n-1}-2n+1\). What is the value of \(F_5\)?
Explanation opens after your attempt
B. ऋण चार(-4)
Concept
\(F_2=17\), \(F_3=12\), \(F_4=5\), and \(F_5=-4\). In exams, understand the subtracted amount as (2n-1).
Why this answer is correct
The correct answer is B. ऋण चार / (-4). \(F_2=17\), \(F_3=12\), \(F_4=5\), and \(F_5=-4\). In exams, understand the subtracted amount as (2n-1).
Exam Tip
\(F_2=17\), \(F_3=12\), \(F_4=5\) और \(F_5=-4\) है। परीक्षा में घटाई जाने वाली राशि (2n-1) समझें।
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