यदि \(a_1=5\) और \(a_{n+1}=4a_n-1\) है तो \(a_3\) क्या होगा?
If \(a_1=5\) and \(a_{n+1}=4a_n-1\), what is \(a_3\)?
Explanation opens after your attempt
B. (75)
Concept
\(a_2=4\times5-1=19\) and \(a_3=4\times19-1=75\). Exam tip: subtract (1) after multiplication.
Why this answer is correct
The correct answer is B. (75). \(a_2=4\times5-1=19\) and \(a_3=4\times19-1=75\). Exam tip: subtract (1) after multiplication.
Exam Tip
\(a_2=4\times5-1=19\) और \(a_3=4\times19-1=75\) है। गुणा के बाद (1) घटाएँ।
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