March 1, 2008 was Saturday. Which day was it on March 1, 2002?
Reviewed by Dalvoy
UPSC Civil Services preparation
- AThursday
- BFridayCorrect
- CSaturday
- DSunday
Explanation
To find the day on March 1, 2002, we calculate the total number of days between March 1, 2002, and March 1, 2008, in terms of odd days.
The number of years between 2002 and 2008 is 6 years. In a normal year, there is 1 odd day. In a leap year, there are 2 odd days.
Between March 1, 2002, and March 1, 2008, the leap years are 2004 and 2008. Note that 2008 is included because the date is March 1, meaning February 29, 2008, has passed within this period.
Total odd days = 4 normal years + 2 leap years
Total odd days = 4 multiplied by 1 + 2 multiplied by 2
Total odd days = 4 + 4 = 8 days
Dividing 8 by 7 gives a remainder of 1 odd day.
Since we are moving backward in time from 2008 to 2002, we subtract 1 day from Saturday.
Saturday minus 1 day is Friday.
Therefore, March 1, 2002, was Friday.
