January 1, 2004 was a Thursday, what day of the week lies on January 1 2005.
A). Wednesday
B). Thursday
C). Friday
D). Saturday
Saturday
Given that January 1, 2004 was Thursday.
Odd days in 2004 = 2 (because 2004 is a leap year)
(Also note that we have taken the complete year 2004 because we need to find out the odd days from 01-Jan-2004 to 31-Dec-2004, that is the whole year 2004)
Hence January 1, 2005 = (Thursday + 2 odd days) = Saturday
2. What was the day of the week on 17th June, 1998?