Question

Sangeeta remembers that her father's birthday was certainly after eight but before the 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?

• A. 10th
• B. 11th
• C. 12th
• D. Data inadequate

Answer 1

The correct option is D Data inadequate

According to Sangeeta , the father’s birthday falls on one of the days among 9^th, 10^th,11^th,12^th December. According to

Natasha, the father’s birthday falls on one of the days among 10^th,11^th,12^th and 13^th December.

The days common to both the groups are 10^th,11^th,and 12^th December.

So, the father’s birthday falls on any one of these days.