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What is in a Birthday.
Message
From
08/11/2001 09:00:26
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivia
 
 
To
08/11/2001 08:52:53
Jay Johengen
Altamahaw-Ossipee, North Carolina, United States
General information
Forum:
Politics
Category:
Other
Miscellaneous
Thread ID:
00578804
Message ID:
00579011
Views:
36
>I'm somewhat probability-challanged so what would it be if you said, "What is the probability that out of the 24 people in this room that one of them has my birthday?"

Let's say there are 24 other people - not counting me.

Slightly less than 24/365. Less, because of the possibility of duplicates.

For an exact calculation, I believe it is easier, once again, to calculate the complement.

24/365 = 6.57%.

1-(364/365)^24 = 6.37% (this is a more accurate value, I believe).

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)
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