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 ?
According to Sangeeta, the dates can be 9,10,11,12
According to Natasha, the dates can be 10,11,12,13
Hence we cannot accurately say the date of his birthday.
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