क्रम \(9,13,17,21,\ldots\) में \(a_4\) और \(a_1\) का अंतर क्या है?
What is the difference between \(a_4\) and \(a_1\) in \(9,13,17,21,\ldots\)?
Explanation opens after your attempt
C. (12)
Concept
\(a_4=21\) and \(a_1=9\). Their difference is (21-9=12).
Why this answer is correct
The correct answer is C. (12). \(a_4=21\) and \(a_1=9\). Their difference is (21-9=12).
Exam Tip
\(a_4=21\) और \(a_1=9\) है। उनका अंतर (21-9=12) है।
Login to save your score, XP, coins and progress.
