\[\boxed{\mathbf{202}.}\]
\[1)\ B = \left\{ 6;7 \right\}:\]
\[\left\{ \varnothing \right\};\left\{ 6 \right\};\left\{ 7 \right\};\left\{ 6;7 \right\}.\]
\[2)\ C = \left\{ 1;2;3 \right\}:\]
\[\left\{ \varnothing \right\};\left\{ 1 \right\};\left\{ 2 \right\};\left\{ 3 \right\};\left\{ 1;2 \right\};\left\{ 1;3 \right\};\]
\[\left\{ 2;3 \right\};\left\{ 1;2;3 \right\}\text{.\ }\]