If the sum of $n$ terms of $2 + 4 + 8 + 16 + \cdots$ is $254$, then $n$ equals —

C-13-Q124: If the sum of $n$ terms of $2 + 4 + 8 + 16 + \cdots$ is $254$, then $n…

C-13-Q124: If the sum of $n$ terms of $2 + 4 + 8 + 16 + \cdots$ is $254$, then $n… | প্রশ্ন করি