\[\boxed{\ \mathbf{646\ (646)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[10;\ \ 11;\ \ 12;\ \ 20;\ \ 21;\ \ 22.\]
\[\boxed{\mathbf{646}.\ }\]
\[1)\ 38 < x < 75\]
\[x = 40,\ 45,\ 50,\ 55,\ 0,\ 65,\ 70.\]
\[2)\ 3720 < x < 3754\]
\[x = 3725,\ 3730,\ 3735,\ 3740,\ \]
\[3745,\ 3750.\]