C-13-Q067mediumsingle_mcq1+2+3+⋯+10=?1 + 2 + 3 + \cdots + 10 = ?1+2+3+⋯+10=?a555555b505050c454545d6060ব্যাখ্যাApplying n(n+1)2\frac{n(n+1)}{2}2n(n+1) with n=10n=10n=10 gives . This is the sum of the first ten natural numbers.