If 15 December 2006 is a Friday, then what will the day of the week on 13 October 2009?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Tuesday.
Number of odd days from 15 December 2006 to 31 December 2008 = 16 + 365 + 366 = 747 days
Number of days from 1 January 2009 to 13 October 2009 = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 13 = 286 days
Total days from 15 December 2006 to 13 October 2009 = 747 + 286 = 1033 days
Number of odd days = 1033/7 = 4 odd days
So, if 15 December 2006 is a Friday, then on 13 October 2009 it will be Tuesday.
Hence, Tuesday is the correct answer.