Question

There are two boys at an international math contest in December 2013; one is British and one...........What is the date? There are two boys at an international math contest in December 2013; one is British and one is American. They both write their names, the date, and their answers on the paper. The only problem is that they both have the same name and the papers cannot be told apart.

Answer 1

the papers can be identified by the date written by them because the British and Americans write the date of the day in the different way so these papers can be segregated easily.
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explanation :

the Americans write the date of the day and month and years as : month/day/year

the British write the day and month and year as :day/month/years

Answer 2

12/12/2013 as in america month/date/year format is applicable and in british format it is date month year