User Tag List

Results 1 to 13 of 13

Thread: Reposting as i get an error when pulling it up

  1. #1
    Join Date
    Apr 2014
    Location
    Manhattan NY
    Posts
    1,629
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    Default Reposting as i get an error when pulling it up

    Cute math problem for the next club ride:
    How many cyclists must be on the club ride before the odds of two riders having the same birthday hits 50% -Mike G

  2. #2
    Join Date
    Oct 2012
    Posts
    10,977
    Post Thanks / Like
    Mentioned
    12 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    Quote Originally Posted by fastupslowdown View Post
    Cute math problem for the next club ride:
    How many cyclists must be on the club ride before the odds of two riders having the same birthday hits 50% -Mike G
    23

    I am more interested at what in your original post create that error on the forum engine ha ha.
    Last edited by sk_tle; 07-11-2022 at 09:14 AM.
    --
    T h o m a s

  3. #3
    Join Date
    Feb 2021
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up


  4. #4
    Join Date
    Nov 2010
    Location
    Concord, NH
    Posts
    2,417
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    People literally don't believe me when I tell them the answer to this, sometimes even after explaining the math.
    Even more odd, it's practically 100% (99.999%) probability of a shared birthday for a group of 100.
    Veridical paradoxes, man.

  5. #5
    Join Date
    Jun 2008
    Posts
    3,617
    Post Thanks / Like
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    I guess the percent sign not followed by two characters that represent hex for another character?
    Tom Ambros

  6. #6
    Join Date
    Apr 2014
    Location
    Manhattan NY
    Posts
    1,629
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    Also, notice on the chart that a group of 57 has a probability of 0.99.

  7. #7
    Join Date
    Apr 2014
    Location
    Manhattan NY
    Posts
    1,629
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up


  8. #8
    Join Date
    Jun 2008
    Location
    Boston, Massachusetts, United States
    Posts
    9,903
    Post Thanks / Like
    Mentioned
    42 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    Back in the day, the University of Michigan had a ride-share board for intercity travel. I'd regularly go visit my girlfriend at Miami University in my Impala sedan.

    So one trip, there's five of us - all strangers - in the car and I overhear a conversation in the back seat. A girl was telling a story and said, "...my birthday's August 23." Another girl immediately exclaims, "So's mine!"

    So is mine.

    That's not exactly probability at work but it was a very cool moment. 60% of us in that car shared a birthday.
    GO!

  9. #9
    Join Date
    Apr 2014
    Location
    Manhattan NY
    Posts
    1,629
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    Monty Hall:

    Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?

  10. #10
    Join Date
    May 2019
    Posts
    408
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    Quote Originally Posted by fastupslowdown View Post
    Monty Hall:

    Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?
    Yes! Always an advantage. Took me a while to get comfortable with this one but it makes sense.
    It's not the years, honey. It's the mileage.

  11. #11
    Join Date
    Jun 2008
    Location
    USA
    Posts
    3,637
    Post Thanks / Like
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    Quote Originally Posted by fastupslowdown View Post
    Monty Hall:

    Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?
    I'd do whatever Marilyn says.

  12. #12
    Join Date
    Apr 2011
    Location
    Hillsdale NY
    Posts
    25,449
    Post Thanks / Like
    Mentioned
    74 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    And if you’d rather have the goat?

  13. #13
    Join Date
    Feb 2009
    Posts
    171
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Reposting as i get an error when pulling it up

    Quote Originally Posted by j44ke View Post
    And if you’d rather have the goat?
    Relevant XKCD: https://xkcd.com/1282/

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •