OrchestraDiscrete Mathematics Level 3
In an orchestra the the musicians play instruments of strings, wind and percussion. 23 musicians play string instruments, 18 musicians plays wind instruments and 12 musicians play percussion instruments. None of the musicians play the three types of instruments, but 10 musicians plays string and wind instruments, 6 musicians plays string and percussion instruments and some musicians plays wind and percussion instruments . At least, how many components there in this orchestra?