\[\boxed{\mathbf{795\ (795).\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[2;8;14;\ldots.\ \ \ \ \ \ \ S_{4} = 176\]
\[d = 8 - 2 = 6\]
\[S_{4} = \frac{2a_{1} + 3d}{2} \cdot 4 = \left( 2a_{1} + 3d \right) \cdot\]
\[\cdot 2 = 4a_{1} + 6d = 4a_{1} +\]
\[\text{+}6 \cdot 6 = 4a_{1} + 36\]
\[4a_{1} + 36 = 176\]
\[4a_{1} = 140\]
\[a_{1} = \frac{140}{4} = 35\]
\[35 - нечетное\ число,\ не\ \]
\[член\ прогрессии.\]
\[Ответ:нет.\]