यदि \(a_n=3n^2-2n\) है, तो \(a_4\) का मान क्या होगा?
If \(a_n=3n^2-2n\), what is the value of \(a_4\)?
Explanation opens after your attempt
C. (40)
Concept
(a_4=3(4)2-2(4)=40). Square first, then multiply and subtract.
Why this answer is correct
The correct answer is C. (40). (a_4=3(4)2-2(4)=40). Square first, then multiply and subtract.
Exam Tip
(a_4=3(4)2-2(4)=40)। पहले वर्ग करें, फिर गुणा और घटाव करें।
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