What will be the (12)th term of the AP (-3,-7,-11,-15,\ldots)?समांतर श्रेढ़ी (-3,-7,-11,-15,\ldots) का (12)वाँ पद क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (-47)(-47)
Here (a=-3), (d=-4), so (a_{12}=-3+11(-4)=-47). Check signs twice when both values are negative.यहाँ (a=-3), (d=-4) है, इसलिए (a_{12}=-3+11(-4)=-47)। दोनों मान ऋणात्मक हों तो चिन्ह दो बार जाँचें।
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