What was the day of the week on 9 May 2022?
Show answer & explanation
Correct answer: D
Explanation
Odd days up to the year 2000
2000 = Leap year
Total odd days = 0
From the year 2001 to 2021
Total years = 21
Leap years = 5 (2004, 2008, 2012, 2016, 2020)
Ordinary years = 16
Odd days =
(5 × 2) + (16 × 1) = 10 + 16 = 26 days
26 ÷ 7 = Remainder 5 odd days
In the year 2022, up to May 9th
Odd days in the months:
January (31) = 3
February (28) = 0
March (31) = 3
April (30) = 2
May (9 days) = 2
Total = 3 + 0 + 3 + 2 + 2 = 10 days
10 ÷ 7 = Remainder 3 odd days
Total odd days
5 + 3 = 8 days
8 ÷ 7 = Remainder 1
Final day: 1 = Monday