On presidents and death

[Georgi Guninski]

 From my blog:
https://j.ludost.net/blog/archives/2019/03/26/on_presidents_and_death/index.html

Since the office was established in 1789, 44 persons have served as
President of the United States. Of these, eight presidents have died
in office, four were assassinated and four died of natural causes [1].

8/44 ~ 1/5 so about one in five US presidents dies in office.

In Bulgaria (Eastern Europe) there is another statistical trend.
Of the five Bulgarian Presidents since 1990 [2] two lost a child
while alive. (If you add T. Jivkov from socialism time they 
become three). So the probability of losing a child is 2/5 = 0.4

The conclusion is left as an exercise for the reader, because the
margin is too small.

[1] https://en.wikipedia.org/wiki/List_of_Presidents_of_the_United_States_who_died_in_office
[2] https://en.wikipedia.org/wiki/List_of_heads_of_state_of_Bulgaria#Republic_of_Bulgaria_(1990%E2%80%93present)