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  3. To test a theory. (Shared Birthdays)

To test a theory. (Shared Birthdays)

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  • D Dalek Dave

    Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

    ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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    AndyStephens
    wrote on last edited by
    #48

    The probability of at least two people sharing the same birthday is 0.5073. Yay, I've found a use for Wolfram Alpha! http://www04.wolframalpha.com/input/?i=same+birthday&f1=23&f=BirthdayProblem.n_23&x=5&y=9[^]

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    • A AndyStephens

      The probability of at least two people sharing the same birthday is 0.5073. Yay, I've found a use for Wolfram Alpha! http://www04.wolframalpha.com/input/?i=same+birthday&f1=23&f=BirthdayProblem.n_23&x=5&y=9[^]

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      blackjack2150
      wrote on last edited by
      #49

      That crashed my IE8.

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      • D Dalek Dave

        Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

        ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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        Dan_Martin
        wrote on last edited by
        #50

        9th May

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        • D Dalek Dave

          Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

          ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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          ormonds
          wrote on last edited by
          #51

          10 Dec

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          • L Lost User

            Trafalgar Day. (that might make some scratch their heads!)

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            ormonds
            wrote on last edited by
            #52

            Now that has to be Oct 30 1805, doesn't it?

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            • D Dalek Dave

              Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

              ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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              John Oxley
              wrote on last edited by
              #53

              16th of August

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              • D Dalek Dave

                Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

                ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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                0x3c0
                wrote on last edited by
                #54

                July 19th. There's that theory broken ;P

                Between the idea And the reality Between the motion And the act Falls the Shadow

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                • O ormonds

                  Now that has to be Oct 30 1805, doesn't it?

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                  The Real Geek
                  wrote on last edited by
                  #55

                  Hmm, 21st I think, which is a shame because it would have matched mine - 30th Oct :-)

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                  • O ormonds

                    Now that has to be Oct 30 1805, doesn't it?

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                    Lost User
                    wrote on last edited by
                    #56

                    No. http://www.bbc.co.uk/history/british/empire_seapower/launch_ani_trafalgar.shtml[^]

                    modified on Wednesday, August 5, 2009 5:37 AM

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                    • T The Real Geek

                      Hmm, 21st I think, which is a shame because it would have matched mine - 30th Oct :-)

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                      Lost User
                      wrote on last edited by
                      #57

                      The Real Geek wrote:

                      21st I think

                      :thumbsup:

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                      • 0 0x3c0

                        July 19th. There's that theory broken ;P

                        Between the idea And the reality Between the motion And the act Falls the Shadow

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                        sthotakura
                        wrote on last edited by
                        #58

                        19 July

                        Cheers, Suresh

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                        • D Dalek Dave

                          Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

                          ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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                          Pheadjack
                          wrote on last edited by
                          #59

                          Nov 29th :) so close to Christmas that my B-day gifts and Christmas gifts were often part of a 'set'. sigh...

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                          • D Dalek Dave

                            Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

                            ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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                            rabryst
                            wrote on last edited by
                            #60

                            I know two Dylans born on the same day in the same year, and who know each other: 3 May 1977.

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                            • J JDL EPM

                              Oakman wrote:

                              Jun 10

                              Does it count if this is my wife's birthday?

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                              Oakman
                              wrote on last edited by
                              #61

                              JDL-EPM wrote:

                              Does it count if this is my wife's birthday?

                              If she has a little bit of luck, she'll never be forced to share a room with me - even a waiting room as an airport, so probably not.

                              Jon "One loves to possess arms, though they hope never to have occasion for them." --Thomas Jefferson to George Washington, 1796. Soap Box 1.0: the first, the original, reborn troll-less

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                              • D Dalek Dave

                                Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

                                ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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                                pughjl
                                wrote on last edited by
                                #62

                                March 31st

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                                • D Dalek Dave

                                  Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

                                  ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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                                  yesu prakash
                                  wrote on last edited by
                                  #63

                                  OCT 28th

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                                  • J Jwalant Natvarlal Soneji

                                    18th Sept. Anyone? . . . No one... :)

                                    Jwalant Natvarlal Soneji, BE IT, India

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                                    dreamaway820
                                    wrote on last edited by
                                    #64

                                    Mine is the 19th of September! :)

                                    The woods are lovely, dark, and deep But I have promises to keep and lines to code before I sleep, and lines to code before I sleep...

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                                    • D Dalek Dave

                                      Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

                                      ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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                                      Dan Neely
                                      wrote on last edited by
                                      #65

                                      what part of NO TEXT don't you understand. wait, my hypocrisy's showing? :doh:

                                      The European Way of War: Blow your own continent up. The American Way of War: Go over and help them.

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                                      • M Marc Clifton

                                        My birthday (month, day, not year) is the same as Bill Clinton's. :cool: Explains a lot. :doh: Marc

                                        Will work for food. Interacx

                                        I'm not overthinking the problem, I just felt like I needed a small, unimportant, uninteresting rant! - Martin Hart Turner

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                                        Zhat
                                        wrote on last edited by
                                        #66

                                        Well, have a Cigar... ;P ;P ;P ;P

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                                        • D Dalek Dave

                                          Young Henry mentioned his mother's Birthday below and it reminded me of a probability experiment that states if 23 people are in a room, it is more likely than less that 2 of them share a birthday. What date is your birthday people? Mine is 31st March. Let us see if the first 23 posters to this can get a matching pair?

                                          ------------------------------------ "When Belly Full, Chin Hit Chest" Confucius 502BC

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                                          eslsys
                                          wrote on last edited by
                                          #67

                                          1st April

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