यदि \(a_n=5n^2-4n\) है, तो \(a_5\) का मान क्या होगा?
If \(a_n=5n^2-4n\), what is the value of \(a_5\)?
Explanation opens after your attempt
C. (105)
Concept
(a_5=5(5)2-4(5)=105). Square first, then multiply and subtract.
Why this answer is correct
The correct answer is C. (105). (a_5=5(5)2-4(5)=105). Square first, then multiply and subtract.
Exam Tip
(a_5=5(5)2-4(5)=105)। पहले वर्ग करें फिर गुणा और घटाव करें।
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