Simple Explanation
यहाँ (a=-3), (d=-4) है, इसलिए (a_{12}=-3+11(-4)=-47)। दोनों मान ऋणात्मक हों तो चिन्ह दो बार जाँचें। / Here (a=-3), (d=-4), so (a_{12}=-3+11(-4)=-47). Check signs twice when both values are negative.
What will be the (12)th term of the AP \(-3,-7,-11,-15,\ldots\)?
A. (-47)
यहाँ (a=-3), (d=-4) है, इसलिए (a_{12}=-3+11(-4)=-47)। दोनों मान ऋणात्मक हों तो चिन्ह दो बार जाँचें। / Here (a=-3), (d=-4), so (a_{12}=-3+11(-4)=-47). Check signs twice when both values are negative.
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Correct Answer: A. (-47). Explanation: यहाँ (a=-3), (d=-4) है, इसलिए (a_{12}=-3+11(-4)=-47)। दोनों मान ऋणात्मक हों तो चिन्ह दो बार जाँचें। / Here (a=-3), (d=-4), so (a_{12}=-3+11(-4)=-47). Check signs twice when both values are negative.
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