What day of the week was 31st January 2007?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Wednesday.
31st January, 2007 = (2006 years + Number of days from 1.1.2007 to 31.1.2007)
Odd days in 1600 years = 0; Odd days in 400 years = 0
6 years = (1 leap years + 5 ordinary years) = (1 × 2 + 5 × 1) = 7 days → 0 odd days
Jan 31 = 31 days
Therefore, 31 days = (4 weeks + 3 day) → 3 odd days
Total number of odd days = (0 + 0 + 0 + 3) = 3 → 3 odd days
Thus, the day is Wednesday.