Forum — Daily Challenge
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Login

    Birthday problems

    Questions
    7
    20
    82
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • The Blade DancerT
      The Blade Dancer M0★ M1★ M2★ M3★ M4 M5
      last edited by

      We should add an extra part: We made a cake that is 62.28 inches in diameter because Prof. Loh deserves a special cake. How much space (volume) will the cake take up?

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

      1 Reply Last reply Reply Quote 2
      • 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

                                  • 1 / 1
                                  • First post
                                    Last post
                                  Daily Challenge | Terms | COPPA