If 6 March 2005 is a Monday, then what day of the week was 6 March 2004?

Correct option is D

Given: 6 March 2005 is a Monday.
6 March 2004 = ?
As we know that in one year there is one odd days.
So, total no of odd days from 6 March 2004 to 6 March 2005 = 1
Thus, the day on 6 March 2004 = Monday – 1 = Sunday.
Correct answer is (d) Sunday.

Note: Feb of 2004 is not fall between march 2004 to march 2005.