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What is the sum of the first (16) terms of the AP (24,21,18,\ldots)?समांतर श्रेढ़ी (24,21,18,\ldots) के पहले (16) पदों का योग कितना है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (24)(24)
The last term is (-21), and (S_{16}=\frac{16}{2}(24-21)=24). Positive and negative terms can greatly reduce the sum.अंतिम पद (-21) है और (S_{16}=\frac{16}{2}(24-21)=24)। धनात्मक और ऋणात्मक पद एक-दूसरे को काफी घटा सकते हैं।
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