What day of the week is 25 April 1997?
Answer and explanation
Correct answer: B. Friday
- Step 1: Determine odd days in completed periods up to 1996: the completed centuries up to 1900 contribute 1 odd days. The remaining 96 years contain 24 leap years and 72 ordinary years, giving .
- Step 2: Count elapsed days in 1997 up to 25 April: the total is 115 days, which equals .
- Step 3: Sum total odd days: . Code 5 corresponds to Friday.
Answer
Friday.
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