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Maths problem 2

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  • L Lost User

    I have two children. One is a boy born on a Tuesday. What is the probability I have two boys?

    CPalliniC Offline
    CPalliniC Offline
    CPallini
    wrote on last edited by
    #8

    Friday. :)

    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]

    In testa che avete, signor di Ceprano?

    1 Reply Last reply
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    • Brian C HartB Brian C Hart

      Unless, of course, your two children are twins. If they are twins, and they are identical, then the probability is 100% since identical twins always are of the same gender. If not, then the probability is 50%. If the children are not twins, the fact that the boy was born on a Tuesday is irrelevant.

      Sincerely Yours, Brian Hart

      L Offline
      L Offline
      Lost User
      wrote on last edited by
      #9

      Brian C. Hart, Ph.D. wrote:

      the fact that the boy was born on a Tuesday is irrelevant

      On the contrary it has everything to do with it.

      1 Reply Last reply
      0
      • realJSOPR realJSOP

        Zero. You don't have enough testosterone yourself to father a boy.

        .45 ACP - because shooting twice is just silly
        -----
        "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
        -----
        "The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001

        L Offline
        L Offline
        Lost User
        wrote on last edited by
        #10

        I already have. And anyway shut your mouth or ill go and 1 vote some of your articles.

        realJSOPR E 2 Replies Last reply
        0
        • H hairy_hats

          13/27?

          L Offline
          L Offline
          Lost User
          wrote on last edited by
          #11

          Correct!

          H 1 Reply Last reply
          0
          • H hairy_hats

            13/27?

            CPalliniC Offline
            CPalliniC Offline
            CPallini
            wrote on last edited by
            #12

            That is 0.

            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]

            In testa che avete, signor di Ceprano?

            H 1 Reply Last reply
            0
            • L Lost User

              I already have. And anyway shut your mouth or ill go and 1 vote some of your articles.

              realJSOPR Offline
              realJSOPR Offline
              realJSOP
              wrote on last edited by
              #13

              Buying, renting, and adopting kids doesn't count.

              .45 ACP - because shooting twice is just silly
              -----
              "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
              -----
              "The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001

              1 Reply Last reply
              0
              • L Lost User

                I have two children. One is a boy born on a Tuesday. What is the probability I have two boys?

                A Offline
                A Offline
                Abhinav S
                wrote on last edited by
                #14

                I don't know.

                My signature "sucks" today

                1 Reply Last reply
                0
                • L Lost User

                  I have two children. One is a boy born on a Tuesday. What is the probability I have two boys?

                  Brian C HartB Offline
                  Brian C HartB Offline
                  Brian C Hart
                  wrote on last edited by
                  #15

                  Null hypothesis probability of 0.02.

                  Sincerely Yours, Brian Hart

                  1 Reply Last reply
                  0
                  • L Lost User

                    I already have. And anyway shut your mouth or ill go and 1 vote some of your articles.

                    E Offline
                    E Offline
                    Enver Maroshi
                    wrote on last edited by
                    #16

                    How does your wife get along with your neighbor?

                    1 Reply Last reply
                    0
                    • L Lost User

                      Correct!

                      H Offline
                      H Offline
                      hairy_hats
                      wrote on last edited by
                      #17

                      I read the article too...

                      1 Reply Last reply
                      0
                      • L Lost User

                        I just ate some watermelon. What is the probability that the probability that I have a boy who was born on a Tuesday?

                        L Offline
                        L Offline
                        Luc Pattyn
                        wrote on last edited by
                        #18

                        watermelons need more time. :)

                        Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]


                        I only read formatted code with indentation, so please use PRE tags for code snippets.


                        I'm not participating in frackin' Q&A, so if you want my opinion, ask away in a real forum (or on my profile page).


                        1 Reply Last reply
                        0
                        • CPalliniC CPallini

                          That is 0.

                          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]

                          H Offline
                          H Offline
                          hairy_hats
                          wrote on last edited by
                          #19

                          Only in integer maths.

                          1 Reply Last reply
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