White, Black and Rust are teachers.
are five subjects to teach : English, French, math, history and
1) Mister Black
does not comprehend angles.
2) Mister White is the only one who knows where the Rocky Mountains are
3) Each teaches three subjects.
4) No subject is taught by three persons.
5) Certain subjects are taught by two people.
6) Mister Rust is bilingual.
: Who teaches what subjects?