यदि \(a_n=80-6n\) है तो \(a_4+a_7\) का मान क्या होगा?
If \(a_n=80-6n\) then what is the value of \(a_4+a_7\)?
Explanation opens after your attempt
B. (94)
Concept
\(a_4=56\) and \(a_7=38\) so the sum is (94). In exams find both terms carefully in a decreasing formula.
Why this answer is correct
The correct answer is B. (94). \(a_4=56\) and \(a_7=38\) so the sum is (94). In exams find both terms carefully in a decreasing formula.
Exam Tip
\(a_4=56\) और \(a_7=38\) इसलिए योग (94) है। परीक्षा में घटते सूत्र में दोनों पद सावधानी से निकालें।
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