तापमानों का अनुक्रम \(42^\circ,38.5^\circ,35^\circ,31.5^\circ\) है। सामान्य अंतर क्या है?
The temperatures form the sequence \(42^\circ,38.5^\circ,35^\circ,31.5^\circ\). What is the common difference?
Explanation opens after your attempt
Correct Answer
C. \(-3.5^\circ\)
Concept
Each step decreases by \(3.5^\circ\), so \(d=-3.5^\circ\). In exams, use a negative sign for a decreasing sequence.
Why this answer is correct
The correct answer is C. \(-3.5^\circ\). Each step decreases by \(3.5^\circ\), so \(d=-3.5^\circ\). In exams, use a negative sign for a decreasing sequence.
Exam Tip
हर बार \(3.5^\circ\) की कमी है, इसलिए \(d=-3.5^\circ\)। परीक्षा में घटते अनुक्रम में ऋणात्मक चिन्ह लगाएं।
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