यदि \(a_1=4\) और (r=-3) है, तो पहले चार पद कौन-से हैं?
If \(a_1=4\) and (r=-3), what are the first four terms?
Explanation opens after your attempt
B. (4,-12,36,-108)
Concept
Multiplying by (-3) each time gives (4,-12,36,-108). A negative ratio makes the signs alternate.
Why this answer is correct
The correct answer is B. (4,-12,36,-108). Multiplying by (-3) each time gives (4,-12,36,-108). A negative ratio makes the signs alternate.
Exam Tip
हर बार (-3) से गुणा करने पर (4,-12,36,-108) मिलते हैं। ऋणात्मक अनुपात से चिह्न बदलते हैं।
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