\[\boxed{\mathbf{900\ (900)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\(1)\ \)
\[a < 0;\ \ b > 0;\ \ c > 0;\]
\[a < c;\ \ a < b;\ \ b > c.\]
\(2)\ \)
\[a > 0;\ \ b < 0;\ \ c < 0;\]
\[a > c;\ \ a > b;\ \ b < c.\]
\(3)\ \)\(\ \)
\[a > 0;\ \ b > 0;\ \ c < 0;\]
\[a > c;\ \ a < b;\ \ b > c.\]