यदि \(a_n=kn+11\) और \(a_{22}-a_9=117\) है तो \(a_{31}\) क्या होगा?
If \(a_n=kn+11\) and \(a_{22}-a_9=117\), what is \(a_{31}\)?
Explanation opens after your attempt
A. (290)
Concept
From (13k=117), (k=9). Therefore \(a_{31}=9\times31+11=290\).
Why this answer is correct
The correct answer is A. (290). From (13k=117), (k=9). Therefore \(a_{31}=9\times31+11=290\).
Exam Tip
(13k=117) से (k=9)। इसलिए \(a_{31}=9\times31+11=290\)।
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