अनुक्रम \(20,16,12,8,\ldots\) क्या समानांतर श्रेढ़ी है?
Is the sequence \(20,16,12,8,\ldots\) an arithmetic progression?
Explanation opens after your attempt
A. हाँ क्योंकि समान अंतर (-4) हैYes because the common difference is (-4)
Concept
Each time (4) is subtracted, so the common difference is (-4). A decreasing sequence can also be an arithmetic progression.
Why this answer is correct
The correct answer is A. हाँ क्योंकि समान अंतर (-4) है / Yes because the common difference is (-4). Each time (4) is subtracted, so the common difference is (-4). A decreasing sequence can also be an arithmetic progression.
Exam Tip
हर बार (4) घट रहा है इसलिए समान अंतर (-4) है। घटती हुई श्रेढ़ी भी समानांतर श्रेढ़ी हो सकती है।
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