§ Задание 31
\[\boxed{\mathbf{31.}}\]
\[42,\ 43,\ 44\]
\[70,\ 71,\ 72\]
\[38,\ 39,\ 40\]
\[98,\ 99,\ 100\]
\[59,\ 60,\ 61\]
\[79,\ 80,\ 81\]
\[\boxed{\mathbf{31.}}\]
\[42,\ 43,\ 44\]
\[70,\ 71,\ 72\]
\[38,\ 39,\ 40\]
\[98,\ 99,\ 100\]
\[59,\ 60,\ 61\]
\[79,\ 80,\ 81\]