C-13-Q115: If $r = 1$, the sum of the first $n$ terms of a geometric series is —

C-13-Q115: If $r = 1$, the sum of the first $n$ terms of a geometric series is — | প্রশ্ন করি

If r=1r = 1r=1, the sum of the first nnn terms of a geometric series is —