What day of the week is 15 March 2016?
Answer and explanation
Correct answer: D. Tuesday
- Step 1: Determine odd days in completed periods up to 2015: the completed centuries up to 2000 contribute 0 odd days. The remaining 15 years contain 3 leap years and 12 ordinary years, giving .
- Step 2: Count elapsed days in 2016 up to 15 March: the total is 75 days, which equals .
- Step 3: Sum total odd days: . Code 2 corresponds to Tuesday.
Answer
Tuesday.
Why not the others: Wednesday is code 3 (forgetting leap day in 2016); Monday is code 1; Saturday is code 6.
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