\[\boxed{\mathbf{825\ (825).\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[b_{1} = - \frac{1}{27};\ \ q = 3\]
\[b_{2} = b_{1} \cdot q = - \frac{3}{27} = - \frac{1}{9};\ \ \ \]
\[b_{3} = b_{2} \cdot q = - \frac{1}{9} \cdot 3 = - \frac{1}{3};\]
\[b_{4} = b_{3} \cdot q = - \frac{1}{3} \cdot 3 = - 1;\ \ \]
\[b_{5} = b_{4} \cdot q = - 1 \cdot 3 = - 3.\]
\[Ответ:\ - \frac{1}{27};\ - \frac{1}{9};\ - \frac{1}{3};\ - 1;\ - 3.\]