C-13-Q119: The sum of the first $14$ terms of $3 + 9 + 27 + \cdots$ is —

C-13-Q119: The sum of the first $14$ terms of $3 + 9 + 27 + \cdots$ is — | প্রশ্ন করি

\dfrac{3^{14} - 1}{2}

The sum of the first 141414 terms of 3+9+27+⋯3 + 9 + 27 + \cdots3+9+27+⋯ is —