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If the sum of the first (n) natural numbers is (325), what is the value of (n)?यदि पहले (n) प्राकृतिक संख्याओं का योग (325) है, तो (n) का मान क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (25)(25)
From (\frac{n(n+1)}{2}=325), (n(n+1)=650), so (n=25). In such questions, look for products of consecutive numbers.(\frac{n(n+1)}{2}=325) से (n(n+1)=650), इसलिए (n=25)। ऐसे प्रश्न में पास-पास की संख्याओं का गुणन देखें।
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