अनुक्रम \(4,13,40,121,\ldots\) के लिए कौन सा पुनरावर्ती नियम सही है?
Which recursive rule is correct for the sequence \(4,13,40,121,\ldots\)?
Explanation opens after your attempt
C. \(a_1=4, a_{n+1}=3a_n+1\)
Concept
\(3\times4+1=13\) and \(3\times13+1=40\). Exam tip: both the first term and rule must match.
Why this answer is correct
The correct answer is C. \(a_1=4, a_{n+1}=3a_n+1\). \(3\times4+1=13\) and \(3\times13+1=40\). Exam tip: both the first term and rule must match.
Exam Tip
\(3\times4+1=13\) और \(3\times13+1=40\) है। पहला पद और नियम दोनों मिलाने चाहिए।
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