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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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    leckey 0
    wrote on last edited by
    #25

    ...

    Back in the blog beatch! http://CraptasticNation.blogspot.com/[^]

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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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      Mark_Wallace
      wrote on last edited by
      #26

      Marc Clifton wrote:

      My birthday (month, day, not year) is the same as Bill Clinton's.

      So you don't know the difference between European and African?

      I wanna be a eunuchs developer! Pass me a bread knife!

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      • M Mark_Wallace

        Marc Clifton wrote:

        My birthday (month, day, not year) is the same as Bill Clinton's.

        So you don't know the difference between European and African?

        I wanna be a eunuchs developer! Pass me a bread knife!

        M Offline
        M Offline
        Mark_Wallace
        wrote on last edited by
        #27

        25th July, btw. And a quick head reckoning says that it's 39-40 people for an evens chance. Of course, it's 6.30 am, here, so my arithmetic might not be all that it can be.

        I wanna be a eunuchs developer! Pass me a bread knife!

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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

          J Offline
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          Jwalant Natvarlal Soneji
          wrote on last edited by
          #28

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

          Jwalant Natvarlal Soneji, BE IT, India

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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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            NandoMan
            wrote on last edited by
            #29

            I believe you are a bit wrong. If you have 366 people, you can guarantee that at least 2 people share birthdays. It´s called "the Pigeonhole principle" http://en.wikipedia.org/wiki/Pigeonhole_principle[^]

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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

              A Offline
              A Offline
              Alan Burkhart
              wrote on last edited by
              #30

              18 January

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              • M Mike Ellison

                November 6. If anyone wants to send me a present then, let me know :-)

                www.MishaInTheCloud.com

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                Jorgen Sigvardsson
                wrote on last edited by
                #31

                Yay! Mine's also November 6. :)

                -- Kein Mitleid Für Die Mehrheit

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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

                  R Offline
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                  Reelix
                  wrote on last edited by
                  #32

                  12 June, and all alone...

                  -= Reelix =-

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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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                    cable beach
                    wrote on last edited by
                    #33

                    Actually, i think they share the same month, not the exact date. This is a theory of combinatorics (the pigeon hole principle) rather than probability. In any event: 13th February

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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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                      A Offline
                      Aamir Butt
                      wrote on last edited by
                      #34

                      20th December

                      Bombing for Peace is like f****ing For Virginity" My Articles

                      1 Reply Last reply
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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

                        H Offline
                        H Offline
                        Hornwood509
                        wrote on last edited by
                        #35

                        7th January

                        -- For a moment, nothing happened. Then, after a second or so, nothing continued to happen --

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                        • N NandoMan

                          I believe you are a bit wrong. If you have 366 people, you can guarantee that at least 2 people share birthdays. It´s called "the Pigeonhole principle" http://en.wikipedia.org/wiki/Pigeonhole_principle[^]

                          B Offline
                          B Offline
                          blackjack2150
                          wrote on last edited by
                          #36

                          The way I know it: If you have 366 people in a room, it's guaranteed (100%) that at least 2 share their birthday, which is obvious. If you have 23 people in a room, it's likely (> 50%) that at least 2 share their birthday, which is not obvious, but it's mathematically proved to be true.

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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

                            S Offline
                            S Offline
                            smcnulty2000
                            wrote on last edited by
                            #37

                            June 7. First day of Vestalia.

                            _____________________________ Will work for ... BRAINS!!! BRAINS!!!!

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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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                              CPallini
                              wrote on last edited by
                              #38

                              19th Jun.

                              If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                              This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
                              [My articles]

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                              0
                              • 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

                                J Offline
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                                Johann Gerell
                                wrote on last edited by
                                #39

                                July 16. When can we se your analysis of this experiment? ;)

                                -- Time you enjoy wasting is not wasted time - Bertrand Russel

                                D 1 Reply Last reply
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                                • C Christian Graus

                                  17 Feb

                                  Christian Graus Driven to the arms of OSX by Vista. Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

                                  K Offline
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                                  kduffingb
                                  wrote on last edited by
                                  #40

                                  17 Feb also :laugh: :laugh:

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                                  0
                                  • O Oakman

                                    Jun 10

                                    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

                                    J Offline
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                                    JDL EPM
                                    wrote on last edited by
                                    #41

                                    Oakman wrote:

                                    Jun 10

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

                                    O 1 Reply Last reply
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                                    • J Johann Gerell

                                      July 16. When can we se your analysis of this experiment? ;)

                                      -- Time you enjoy wasting is not wasted time - Bertrand Russel

                                      D Offline
                                      D Offline
                                      Dalek Dave
                                      wrote on last edited by
                                      #42

                                      I will publish an analysis later today, but already there are several shared birthdays.

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

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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

                                        M Offline
                                        M Offline
                                        Mustafa Ismail Mustafa
                                        wrote on last edited by
                                        #43

                                        February 12

                                        If the post was helpful, please vote, eh! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?

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                                        • D Dalek Dave

                                          I will publish an analysis later today, but already there are several shared birthdays.

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

                                          M Offline
                                          M Offline
                                          Mustafa Ismail Mustafa
                                          wrote on last edited by
                                          #44

                                          So long as we get presents...

                                          If the post was helpful, please vote, eh! Current activities: Book: Devils by Fyodor Dostoyevsky Project: Hospital Automation, final stage Learning: Image analysis, LINQ Now and forever, defiant to the end. What is Multiple Sclerosis[^]?

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