यदि \(a_n=4n^2-n\) है तो \(a_4:a_2\) क्या होगा?
If \(a_n=4n^2-n\) then what is \(a_4:a_2\)?
Explanation opens after your attempt
B. (30:7)
Concept
\(a_4=60\) and \(a_2=14\) so the simplified ratio is (30:7). In exams simplify the ratio.
Why this answer is correct
The correct answer is B. (30:7). \(a_4=60\) and \(a_2=14\) so the simplified ratio is (30:7). In exams simplify the ratio.
Exam Tip
\(a_4=60\) और \(a_2=14\) इसलिए सरल अनुपात (30:7) है। परीक्षा में अनुपात को सरल करें।
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