यदि \(a_n=60-5n\) है तो \(a_9\) का मान क्या होगा?
If \(a_n=60-5n\) then what is the value of \(a_9\)?
Explanation opens after your attempt
B. (15)
Concept
\(a_9=60-45=15\). In exams subtract (5n) correctly in a decreasing formula.
Why this answer is correct
The correct answer is B. (15). \(a_9=60-45=15\). In exams subtract (5n) correctly in a decreasing formula.
Exam Tip
\(a_9=60-45=15\) है। परीक्षा में घटते सूत्र में (5n) को सही घटाएँ।
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