If 18 October 2006 was Wednesday, then what was the day of the week on 17 October 2000?

Tuesday

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 }

18 Oct 2006 ;

18 + 01 + 06 + 06 + 01 = 32

remainder of \(\frac{32}{7}\) is 04

Therefore, the code of 04 is Wednesday

Similarly,

17 Oct 2000 ;

17 + 01 + 06 + + 0 + 0 = 24

remainder of \(\frac{24}{7}\) is 03

Therefore, the code of 03 is Tuesday