If 12th February 2011 was a Saturday, then what was the day of the week on 13th February 2015?
Answer & explanation
Correct answer: option 3

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 }
12 Feb 2011;
12 + 04 + 06 + 11 + 02 = 35
remainder of \(\frac{35}{7}\) = 0
Therefore, the code of 0 is Saturday
Similarly,
13 Feb 2015;
13 + 04 + 06 + 15 + 03 = 41
remainder of \(\frac{41}{7}\) = 06
Therefore, the code of 06 is Friday