If 13 September 2003 is a Saturday, then what will be the day of the week on 14 February 2005?

Monday

Using Code Method :-

\(\frac{Date+Month code+Year code+Last 2 digits of yr+Leap yrs till given yr}{7}\)

( Note: Remainder of the above sum will be the code of week day }

13 Sep 2003;

13 + 06 + 06 + 03 + 0 = 28

remainder of \(\frac{28}{7}\) = 0

Therefore, the code of 0 is Saturday

Similarly,

14 Feb 2005;

14 + 04 + 06 + 05 + 01 = 30

remainder of \(\frac{30}{7}\) = 02

Therefore, the code of 02 is Monday