यदि \(a_n=2n^2+n\) है, तो \(a_5-a_3\) का मान क्या होगा?
If \(a_n=2n^2+n\), what is the value of \(a_5-a_3\)?
Explanation opens after your attempt
D. (34)
Concept
(a_5=2\(5^2\)+5=55) and (a_3=2\(3^2\)+3=21). Therefore the difference is (55-21=34).
Why this answer is correct
The correct answer is D. (34). (a_5=2\(5^2\)+5=55) and (a_3=2\(3^2\)+3=21). Therefore the difference is (55-21=34).
Exam Tip
(a_5=2\(5^2\)+5=55) और (a_3=2\(3^2\)+3=21) है। इसलिए अंतर (55-21=34) है।
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