यदि \(a_n=30-5n\) है, तो \(a_4\) का मान क्या होगा?
If \(a_n=30-5n\), what is the value of \(a_4\)?
Explanation opens after your attempt
B. (10)
Concept
\(a_4=30-20=10\). In exams, calculate (5n) first and then subtract.
Why this answer is correct
The correct answer is B. (10). \(a_4=30-20=10\). In exams, calculate (5n) first and then subtract.
Exam Tip
\(a_4=30-20=10\) है। परीक्षा में पहले (5n) निकालें और फिर घटाएँ।
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