Sangeeta remembers that her father’s birthday was certainly after eighth but before thirteenth of December. Her sister Natasha remembers that their father’s birthday was definitely after ninth but before fourteenth of December. On which date of December was their father’s birthday?
Answer: D
Correct answer: Data inadequate
Sangeeta allows the 9th to the 12th and Natasha the 10th to the 13th. Three dates - the 10th, 11th and 12th - satisfy both, so the birthday cannot be pinned down: the data are inadequate.
Please log in or register to report this question.