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In a school, badge numbers from (1) to (38) are given. What will be the sum of all badge numbers?एक स्कूल में (1) से (38) तक बैज नंबर बांटे गए। सभी बैज नंबरों का योग कितना होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (741)(741)
The sum of all badge numbers is (S_{38}=\frac{38\times39}{2}=741). When counting starts from (1), take the last number as (n).सभी बैज नंबरों का योग (S_{38}=\frac{38\times39}{2}=741) है। लगातार (1) से शुरू होने पर अंतिम संख्या को (n) मानें।
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