यदि \(a_1=3\) और \(a_{n+1}=3a_n-2n\) है तो \(a_3\) क्या होगा?
If \(a_1=3\) and \(a_{n+1}=3a_n-2n\), what is \(a_3\)?
Explanation opens after your attempt
B. (17)
Concept
\(a_2=3\times3-2=7\) and \(a_3=3\times7-4=17\). Exam tip: use the new value of (n) at each step.
Why this answer is correct
The correct answer is B. (17). \(a_2=3\times3-2=7\) and \(a_3=3\times7-4=17\). Exam tip: use the new value of (n) at each step.
Exam Tip
\(a_2=3\times3-2=7\) और \(a_3=3\times7-4=17\) है। हर चरण में (n) का नया मान लगाएँ।
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