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 ?
Option:
Justification: According to Sanbgeeta, the father`s birthday falls on one of the days among 9th, 10th, 11th and 12th December. According to Natasha, the father`s birthday falls on one of the day among 10th, 11th, 12th and 13th December. The days common to both the groups are 10th, 11th and 12th December. So, the father`s birthday falls on any one of these days.
