What is the probability (across all years) that Christmas falls on a Wednesday?
7% 14%
29% 14.25%
58% 14.2̅8̅5̅7̅1̅4̅% (1/7)
7% 14.5%
90 votes • Final results
2
1
1
5
Includes Christmas in future?
1
With current calendar, It is 52weeks+1day, but +2days for every 4th year, +1 for 100th, +2 for 400th, and +1 for 1000th. For every 2k yrs, the sum of extra days is E=n + n/4 - n/100 + n/400 - n/1000 where n=2000. E%7=2. 7 & 2 are co-prime.
2
Replying to @ThinkerYzu
no, -1 for 100th, +1 again for 400th, and no change for 1000th.

Dec 19, 2019 · 5:15 PM UTC