>>>>>Adolph Hitler and Osama Bin Laden share the same birthdate - April 20. Perhaps we should tell mothers to not have children on this day.
>>>>
>>>>Or should we tell all people not to run the production version of their apps around July 20th?
>>>
>>>Interesting observation. Good to know :)
>>>
>>>BTW, who was born on July 25 (my son's birthday)?
>>
>>This reminds me of a sort of puzzle. Actually, this is pure mathematics.
>>
>>You have a sample of 24 people, randomly selected. What is the probability that two of them share the same birthday?
>>
>>Hilmar.
>
>Almost 100%. I read it in my youth, but don't remember an explanation now...
For 24 people, slightly over 50%. You can do all the required calculations in a spreadsheet. Calculate the complement first: the probability that you
don't have two people with a common birthday.
Probability for 1st. person: 365/365
Probability for 2nd. person: 364/365
Probability for 3rd. person: 363/365
...
Subtract this probability from 1, to get the desired answer (for 24 people: 0,538).
Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
