यदि \(a_n=63-5n\) है, तो \(a_4+a_9\) का मान क्या है?
If \(a_n=63-5n\), what is the value of \(a_4+a_9\)?
Explanation opens after your attempt
B. (81)
Concept
\(a_4=43\) and \(a_9=18\), so the sum is (61). The correct option should include (61).
Why this answer is correct
The correct answer is B. (81). \(a_4=43\) and \(a_9=18\), so the sum is (61). The correct option should include (61).
Exam Tip
\(a_4=43\) और \(a_9=18\), इसलिए योग (61) नहीं बल्कि (61) है। सही विकल्पों में (61) होना चाहिए।
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