- Amit is available at home from 12 noon to 4 p.m. on Tuesday, Thursday and Sunday.
- His younger brother Dermal is available at home on Monday, Thursday, Friday and Sunday between 10 a.m. to 2 p.m.
- The eldest brother Raj is available between 9 a.m. to 12 noon on Monday, Wednesday and Thursday and 2 p.m. to 4 p.m. on Friday, Saturday and Sunday.
At a time, on which day of a week all the three brothers are available at home?
Never available together.
Cannot be determined.
Clearly all the three are not available at the same time on any day of the week.