नियम \(a_n=2n^2+5n\) से \(a_5\) क्या होगा?
What will \(a_5\) be for the rule \(a_n=2n^2+5n\)?
Explanation opens after your attempt
C. (75)
Concept
Putting (n=5), (a_5=2\(5^2\)+5(5)=75). Handle both the square and multiplication carefully.
Why this answer is correct
The correct answer is C. (75). Putting (n=5), (a_5=2\(5^2\)+5(5)=75). Handle both the square and multiplication carefully.
Exam Tip
(n=5) रखने पर (a_5=2\(5^2\)+5(5)=75) है। वर्ग और गुणा दोनों सावधानी से करें।
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