Ferrari Mailing List: Re: birthday greetings

[Pat Scopelliti (pscopell]

Close, but no.  Wait until you have 22 people.  With 20 people you have a
44% chance of having two people with the same birthday (assuming 366 days)
Here are the numbers up to 30 people

10 13.842700
11 16.432100
12 19.172000
13 22.043000
14 25.024900
15 28.097700
16 31.241000
17 34.434700
18 37.659200
19 40.895500
20 44.125200
21 47.331200
22 50.497000
23 53.607900
24 56.650000
25 59.611100
26 62.480200
27 65.248100
28 67.906700
29 70.449600
30 72.871800

Pat

Pat Scopelliti
pscopell [at] stny.rr.com
607-731-8584


-----Original Message-----
From: Ken Rentiers [mailto:rentiers [at] mac.com] 
Sent: Sunday, December 17, 2006 11:23 AM
To: Pat Scopelliti
Cc: The FerrariList
Subject: Re: [Ferrari] birthday greetings

Statistically, if there are are at least 20 people in the room it is  
50 - 50 that two of them share a birthday.
Good for bar bets.

ken

On Dec 17, 2006, at 9:55 AM, Doug and Terri Anderson wrote:

> OK - so its now a birthday thread -
>
> Anyone else born on July 26th?
>
> Well, cepting my pal Sir Michael Phillip "Mick" Jagger who is born  
> on my
> eggzact birthday - he is a tad older than me owning to time shift  
> heh heh
>
> DOUG

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