\[\boxed{\ \mathbf{677\ (677)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\textbf{а)}\frac{1}{3}\]
\[\textbf{б)}\frac{3}{5}\]
\[\textbf{в)}\frac{7}{15}\]
\[\textbf{г)}\frac{9}{14}\]
\[\textbf{д)}\frac{5}{24}\]
\[\boxed{\mathbf{677}.}\]
\[347*\]
\[* = 4.\]