यदि \(a_1=8\) और \(a_{n+1}=a_n+9\) है तो \(a_{12}\) क्या होगा?
If \(a_1=8\) and \(a_{n+1}=a_n+9\), what is \(a_{12}\)?
Explanation opens after your attempt
B. (107)
Concept
For \(a_{12}\), (9) is added (11) times, so \(a_{12}=107\). Exam tip: the rule is applied one less time than the term number.
Why this answer is correct
The correct answer is B. (107). For \(a_{12}\), (9) is added (11) times, so \(a_{12}=107\). Exam tip: the rule is applied one less time than the term number.
Exam Tip
\(a_{12}\) के लिए (9) को (11) बार जोड़ा जाता है इसलिए \(a_{12}=107\) है। पद संख्या से एक कम बार नियम लगता है।
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