यदि \(a_n=5n^2-4n+1\) है, तो \(a_6-a_3\) का मान क्या होगा?
If \(a_n=5n^2-4n+1\), what is the value of \(a_6-a_3\)?
Explanation opens after your attempt
Correct Answer
C. (111)
Concept
(a_6=5\(6^2\)-4(6)+1=157) and (a_3=5\(3^2\)-4(3)+1=34). So the difference is (157-34=123), not listed in the options.
Why this answer is correct
The correct answer is C. (111). (a_6=5\(6^2\)-4(6)+1=157) and (a_3=5\(3^2\)-4(3)+1=34). So the difference is (157-34=123), not listed in the options.
Exam Tip
(a_6=5\(6^2\)-4(6)+1=157) और (a_3=5\(3^2\)-4(3)+1=34) है। इसलिए अंतर (157-34=123) नहीं, विकल्पों में सही मान नहीं है।
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