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The temperatures form the sequence (42^\circ,38.5^\circ,35^\circ,31.5^\circ). What is the common difference?तापमानों का अनुक्रम (42^\circ,38.5^\circ,35^\circ,31.5^\circ) है। सामान्य अंतर क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (-3.5^\circ)(-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.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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