If 15 July 2002 is a Monday, then what will be the day of the week on 16 October 2005?

Sunday

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 }

15 July 2002;

15 + 0 + 06 + 02 + 0 = 23

remainder of \(\frac{23}{7}\) = 02

Therefore, the code of 02 is Monday

Similarly,

16 Oct 2005;

16 + 01 + 06 + 05 + 01 = 29

remainder of \(\frac{29}{7}\) = 01

Therefore, the code of 01 is Sunday