Question 39
What was the day of the week on 15 Aug 2019, given that 1st Jan 2025 is a Wednesday?
Solution
Let's figure out the number of days between 15 Aug, 2019, and Jan 1st, 2025.
Let's find the number of days from 15 Aug 2019 to Jan 1st 2020.
Aug - 16, Sept - 30, Oct - 31, Nov - 30, Dec - 31. Their sum is 138.
2020 - 366
2021 - 365
2022 - 365
2023 - 365
2024 - 366
2025 - 1
The sum of these days = 1828.
Total 138+1828 = 1966 odd days.
1966% 7 = 6.
Six days back to Wednesday will be Thursday
So, the day is Thursday.
