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What is the value of (1+2+3+\cdots+20)?(1+2+3+\cdots+20) का मान क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (210)(210)
This is the sum of the first (20) natural numbers, so (S_{20}=210). The dots (\cdots) show that the sequence continues.यह पहली (20) प्राकृतिक संख्याओं का योग है इसलिए (S_{20}=210)। बिंदुओं वाला (\cdots) क्रम जारी रहने का संकेत देता है।
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