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If it was a Sunday on 30 January 2000, then what was the day of week on 1 March 2004?

Solution

✅ Correct Option: 4

From 30 Jan 2000 to 30 Jan 2004 the four intervals contribute odd days 2 (the 2000 leap year's 29 Feb falls inside), 1, 1 and 1, totalling 5. Sunday +5+5 = Friday, so 30 Jan 2004 was a Friday. From 30 Jan to 1 Mar 2004 is 31 days (2004 is a leap year), and 31 mod 7=331 \bmod 7 = 3, so Friday +3+3 = Monday.

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