यदि \(a_n=7n-1\) है, तो इस समांतर श्रेणी का सार्व अंतर क्या है?
If \(a_n=7n-1\), what is the common difference of this arithmetic progression?
Explanation opens after your attempt
C. (7)
Concept
In the linear rule \(a_n=7n-1\), the coefficient of (n) is the difference (7). In exams, take (k) as (d) in (kn+c).
Why this answer is correct
The correct answer is C. (7). In the linear rule \(a_n=7n-1\), the coefficient of (n) is the difference (7). In exams, take (k) as (d) in (kn+c).
Exam Tip
रैखिक नियम \(a_n=7n-1\) में (n) का गुणांक (7) ही अंतर है। परीक्षा में (kn+c) में (k) को (d) मानें।
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