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    Birthday problems

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    • RZ923R
      RZ923 M0★ M2★ M3★ M4★ M5
      last edited by

      Another problem:
      Bob the baker 🐱 is back!
      He baked 28 small cakes that could bear the symbols: P,O,-,S,H,E,N,L,O,H,6,/,1 or 8. He generate a random symbol from the above list for each cake and put the symbols on them. (Yes, the letter O and H have the highest probability of 1/7 each, while the others 1/14 each)
      But he accidentally messed up the cakes and have to randomly re-order them.
      Then he uses Baker Cat Magic and have a 16.18% chance of switching the symbol on the cake currently to the next (ie P to O, S to H etc). O and H have 8.09% chance of going to - and 6 with the same chance for going to H and E, respectively.
      Or else the symbol stays the same. The same applies for all symbols.
      What is the chance that, in the end, it spells “PO-SHENLOH6/18PO-SHENLOH6/18” ?

      Very Interesting

      debbieD 1 Reply Last reply Reply Quote 2
      • debbieD
        debbie ADMIN M0★ M1 M5 @RZ923
        last edited by

        @RZ923 We're going to have a lot of fun with these, lol 🙂

        1 Reply Last reply Reply Quote 2
        • The Blade DancerT
          The Blade Dancer M0★ M1★ M2★ M3★ M4 M5
          last edited by

          My brain power isnt enough to solve problems but I can surely make them

          The Blade Dancer
          League of Legends, Valorant: Harlem Charades (#NA1)
          Discord: Change nickname if gay#7585

          RZ923R 1 Reply Last reply Reply Quote 3
          • RZ923R
            RZ923 M0★ M2★ M3★ M4★ M5 @The Blade Dancer
            last edited by

            @The-Darkin-Blade Me too 🙂

            Very Interesting

            1 Reply Last reply Reply Quote 1
            • RZ923R
              RZ923 M0★ M2★ M3★ M4★ M5
              last edited by RZ923

              Bob the 🐱’s bakery was a success!
              He cooperated with three big 🍰 companies - Po, Shen and Loh - to celebrate Professor Loh’s birthday.
              On June 18th, the three companies makes random # of cakes between 24 and 618. Every possible # of cakes have equal chance. Then they press letters on each one.
              Po company: 61.8% chance press P, 38.2% chance press O.
              Shen company: 6.2% chance press S, 93.8% chance press H, E or N.
              Loh company: 81.6% chance of press L, 18.4% chance press O or H.
              Then they choose the best cake on display. Each cake have the same chance of being on display. Bob the 🐱 take photos of the three displays and shuffles them into random order.
              What is the probability that the photos spell Professor Loh’s initials (PSL) in the same order?

              Very Interesting

              1 Reply Last reply Reply Quote 3
              • divinedolphinD
                divinedolphin M0★ M1★ M2★ M3★ M4★ M5★ M6★
                last edited by

                Oh wow these are hard! Happy early birthday Prof. Loh! Mine is two days after yours 🙂

                👕👕👕👕👕👕👕👕👕👕🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌

                sqwishyS 1 Reply Last reply Reply Quote 2
                • sqwishyS
                  sqwishy M2 M3 M4★ @divinedolphin
                  last edited by

                  @divinedolphin An early happy birthday to you too!!! 🙂

                  1 Reply Last reply Reply Quote 3
                  • RZ923R
                    RZ923 M0★ M2★ M3★ M4★ M5
                    last edited by

                    An early happy birthday!
                    (To @po and @divinedolphin)

                    Very Interesting

                    1 Reply Last reply Reply Quote 2
                    • RZ923R
                      RZ923 M0★ M2★ M3★ M4★ M5
                      last edited by

                      It is Prof Loh’s birthday today!
                      Hooray!
                      🎂 🎉🎊
                      4:19 PM in Victoria, 2:19 AM in Pittsborough. 18th June, 2020.

                      Very Interesting

                      1 Reply Last reply Reply Quote 3
                      • divinedolphinD
                        divinedolphin M0★ M1★ M2★ M3★ M4★ M5★ M6★
                        last edited by

                        Happy Birthday Prof. Loh!!!! 🎂 🎉

                        👕👕👕👕👕👕👕👕👕👕🍌🍌🍌🍌🍌🍌🍌🍌🍌🍌

                        sqwishyS 1 Reply Last reply Reply Quote 2
                        • sqwishyS
                          sqwishy M2 M3 M4★ @divinedolphin
                          last edited by

                          HAPPY BIRTHDAY PROF. LOH!!!! 😺 🍰 🎉

                          1 Reply Last reply Reply Quote 4
                          • Potato2017P
                            Potato2017 M5★
                            last edited by

                            😄 😄 😄

                            The best Potato
                            aops: Potato2017
                            yt: http://bit.ly/potatosubscribe
                            discord: Potato2017#1822 (it's tent#0001 now)
                            tetr.io: https://ch.tetr.io/u/potato2017
                            -Potato2017

                            1 Reply Last reply Reply Quote 1
                            • K
                              Kaden Xia M2
                              last edited by

                              Happy Birthday Po Shen Loh you now are going to do calculus and bunch of things like 🍰 : 🎉 Po Shen Loh you did a really good thing for like calculus and integrals!!

                              1 Reply Last reply Reply Quote 4
                              • K
                                Kaden Xia M2
                                last edited by

                                The Montgomery Blair Math Tournament or MBMT is a really good thing and Po Shen Loh the coach of the USA team for IMO will explain the problems!!

                                1 Reply Last reply Reply Quote 3

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