Question

Sangeeta remembers that her father's birthday was certainly after the 8th but before 13th of December. Her sister Natasha remembers that their father's birthday was definitely after 9th but before the 14th of December. On which date of December was their father's birthday?

Options

• 10th

• 11th

• 12th

• Cannot be determined

Answer 1

Cannot be determined
Explanation:
According to the question
Sangeeta → 9, 10, 11, 12
Natasha → 10, 11, 12, 13
Here, 10, 11, and 12 are three dates in common.
So, the confirm date cannot be determined.