यदि \(a_1=2\), \(a_2=6\) और \(a_n=a_{n-1}+3a_{n-2}\) है तो \(a_3\) क्या होगा?
If \(a_1=2\), \(a_2=6\), and \(a_n=a_{n-1}+3a_{n-2}\), what is \(a_3\)?
Explanation opens after your attempt
B. (12)
Concept
\(a_3=6+3\times2=12\). Exam tip: multiply \(a_{n-2}\) by (3) in this two-term rule.
Why this answer is correct
The correct answer is B. (12). \(a_3=6+3\times2=12\). Exam tip: multiply \(a_{n-2}\) by (3) in this two-term rule.
Exam Tip
\(a_3=6+3\times2=12\) है। दो-पद नियम में \(a_{n-2}\) को (3) से गुणा करें।
Login to save your score, XP, coins and progress.
