Sneha correctly remembers that her father's birthday is before 16th June but after 11th June whereas, her younger brother correctly remembers that their father's birthday is after 13th June but before 18th June and her elder brother correctly remembers that their father's birthday is on an even date. On what date, in June, is definitely their father's birthday?
According to the question
Sneha - 12, 13, 14, 15
Younger brother - 14, 15, 16, 17
Elder brother ..., 14, 16, ...
Hence, the confirm date is 14th.