यदि \(a_n=42-6n\) है, तो इस समानांतर श्रेढ़ी का समान अंतर क्या है?
If \(a_n=42-6n\), what is the common difference of this arithmetic progression?
Explanation opens after your attempt
A. (-6)
Concept
In the linear form the coefficient of (n) is (-6), so the common difference is (-6). Always check the sign of the coefficient.
Why this answer is correct
The correct answer is A. (-6). In the linear form the coefficient of (n) is (-6), so the common difference is (-6). Always check the sign of the coefficient.
Exam Tip
रैखिक रूप में (n) का गुणांक (-6) है इसलिए समान अंतर (-6) है। गुणांक का चिह्न जरूर देखें।
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