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Friday riddle...

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  • O Olli

    OK, i have another stupid riddle for friday.... Three guys are in a restaurant, and they think they should order something for three. Everybody gives 10$, and they call the waitress. The waitress takes the 30$ and goes to the kitchen to order a meal for 30$. Because the cook knows the three guys, he tells the waitress to give them 5$ back. She walks back to the table with the 5$, and because 5$ is not really good to divide by three, the guys tell her only to give 1$ back to each and keep 2$ as tip. And here's the riddle: Everybody has paid 10$ and got 1$ back, that makes 9$, right? 3x9$ is 27$, right? The waitress has 2$, right? 27$ + 2$ is 29$, right? :doh: ?????? Where is the missing DOLLAR ??????? :doh: :confused: Nice Weekend!!!

    Olli "Ooooooh, they have the internet on computers now!"
    Homer Simpson
    :beer: + :java: = NULL :=> X|

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    Antony M Kancidrowski
    wrote on last edited by
    #11

    Since you started with a maths puzzle here is another. How can this be true? let a = x a+a = a+x [add a to both sides] 2a = a+x [a+a = 2a] 2a-2x = a+x-2x [subtract 2x from both sides] 2(a-x) = a+x-2x [2a-2x = 2(a-x)] 2(a-x) = a-x [x-2x = -x] 2 = 1 [divide both sides by a-x] There is a catch!! See if you can work it out. Ant. I'm hard, yet soft.
    I'm coloured, yet clear.
    I'm fruity and sweet.
    I'm jelly, what am I? Muse on it further, I shall return!
    - David Williams (Little Britain)

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    • O Olli

      OK, i have another stupid riddle for friday.... Three guys are in a restaurant, and they think they should order something for three. Everybody gives 10$, and they call the waitress. The waitress takes the 30$ and goes to the kitchen to order a meal for 30$. Because the cook knows the three guys, he tells the waitress to give them 5$ back. She walks back to the table with the 5$, and because 5$ is not really good to divide by three, the guys tell her only to give 1$ back to each and keep 2$ as tip. And here's the riddle: Everybody has paid 10$ and got 1$ back, that makes 9$, right? 3x9$ is 27$, right? The waitress has 2$, right? 27$ + 2$ is 29$, right? :doh: ?????? Where is the missing DOLLAR ??????? :doh: :confused: Nice Weekend!!!

      Olli "Ooooooh, they have the internet on computers now!"
      Homer Simpson
      :beer: + :java: = NULL :=> X|

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      David Crow
      wrote on last edited by
      #12

      This is a different twist on an older riddle.


      "When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

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      • A Antony M Kancidrowski

        Since you started with a maths puzzle here is another. How can this be true? let a = x a+a = a+x [add a to both sides] 2a = a+x [a+a = 2a] 2a-2x = a+x-2x [subtract 2x from both sides] 2(a-x) = a+x-2x [2a-2x = 2(a-x)] 2(a-x) = a-x [x-2x = -x] 2 = 1 [divide both sides by a-x] There is a catch!! See if you can work it out. Ant. I'm hard, yet soft.
        I'm coloured, yet clear.
        I'm fruity and sweet.
        I'm jelly, what am I? Muse on it further, I shall return!
        - David Williams (Little Britain)

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        J Offline
        Johan Rosengren
        wrote on last edited by
        #13

        Antony M Kancidrowski wrote: 2 = 1 [divide both sides by a-x] a = x a - x = 0 division by zero...

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        • J Johan Rosengren

          Antony M Kancidrowski wrote: 2 = 1 [divide both sides by a-x] a = x a - x = 0 division by zero...

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          Antony M Kancidrowski
          wrote on last edited by
          #14

          Quite. It is an oldie but I like it :-D Ant. I'm hard, yet soft.
          I'm coloured, yet clear.
          I'm fruity and sweet.
          I'm jelly, what am I? Muse on it further, I shall return!
          - David Williams (Little Britain)

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          • A Antony M Kancidrowski

            Quite. It is an oldie but I like it :-D Ant. I'm hard, yet soft.
            I'm coloured, yet clear.
            I'm fruity and sweet.
            I'm jelly, what am I? Muse on it further, I shall return!
            - David Williams (Little Britain)

            J Offline
            J Offline
            Johan Rosengren
            wrote on last edited by
            #15

            The universe would be a much more interesting place if division by zero was allowed :-)

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            • A Antony M Kancidrowski

              Since you started with a maths puzzle here is another. How can this be true? let a = x a+a = a+x [add a to both sides] 2a = a+x [a+a = 2a] 2a-2x = a+x-2x [subtract 2x from both sides] 2(a-x) = a+x-2x [2a-2x = 2(a-x)] 2(a-x) = a-x [x-2x = -x] 2 = 1 [divide both sides by a-x] There is a catch!! See if you can work it out. Ant. I'm hard, yet soft.
              I'm coloured, yet clear.
              I'm fruity and sweet.
              I'm jelly, what am I? Muse on it further, I shall return!
              - David Williams (Little Britain)

              D Offline
              D Offline
              dacris
              wrote on last edited by
              #16

              You cannot divide both sides by a-x because a-x = a-a = 0. Can't divide by zero. Every programmer knows that. ;P I have a symbiotic relationship with my computer.

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              • O Olli

                OK, i have another stupid riddle for friday.... Three guys are in a restaurant, and they think they should order something for three. Everybody gives 10$, and they call the waitress. The waitress takes the 30$ and goes to the kitchen to order a meal for 30$. Because the cook knows the three guys, he tells the waitress to give them 5$ back. She walks back to the table with the 5$, and because 5$ is not really good to divide by three, the guys tell her only to give 1$ back to each and keep 2$ as tip. And here's the riddle: Everybody has paid 10$ and got 1$ back, that makes 9$, right? 3x9$ is 27$, right? The waitress has 2$, right? 27$ + 2$ is 29$, right? :doh: ?????? Where is the missing DOLLAR ??????? :doh: :confused: Nice Weekend!!!

                Olli "Ooooooh, they have the internet on computers now!"
                Homer Simpson
                :beer: + :java: = NULL :=> X|

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                B Offline
                braber
                wrote on last edited by
                #17

                The other dollor went to tax!!!! :)

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                • O Olli

                  OK, i have another stupid riddle for friday.... Three guys are in a restaurant, and they think they should order something for three. Everybody gives 10$, and they call the waitress. The waitress takes the 30$ and goes to the kitchen to order a meal for 30$. Because the cook knows the three guys, he tells the waitress to give them 5$ back. She walks back to the table with the 5$, and because 5$ is not really good to divide by three, the guys tell her only to give 1$ back to each and keep 2$ as tip. And here's the riddle: Everybody has paid 10$ and got 1$ back, that makes 9$, right? 3x9$ is 27$, right? The waitress has 2$, right? 27$ + 2$ is 29$, right? :doh: ?????? Where is the missing DOLLAR ??????? :doh: :confused: Nice Weekend!!!

                  Olli "Ooooooh, they have the internet on computers now!"
                  Homer Simpson
                  :beer: + :java: = NULL :=> X|

                  B Offline
                  B Offline
                  braber
                  wrote on last edited by
                  #18

                  30$ total 25$ went to meal 5$ Back 2$ of the 5$ went to waitress... $28 was spent by the entire crew 28\3 $9.33 9.33x3+2 = $30 Sales tax would have been funnier!!! Heeler

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                  • K KaRl

                    Olli wrote: ?????? Where is the missing DOLLAR ??????? I'm surprized nobody blamed taxes :rolleyes:


                    Собой остаться дольше...

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                    Arjan Einbu
                    wrote on last edited by
                    #19

                    KaЯl wrote: I'm surprized nobody blamed taxes With only 3% missing? Not here...


                    Have a look at my latest article about Object Prevalence with Bamboo Prevalence.

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                    • O Olli

                      OK, i have another stupid riddle for friday.... Three guys are in a restaurant, and they think they should order something for three. Everybody gives 10$, and they call the waitress. The waitress takes the 30$ and goes to the kitchen to order a meal for 30$. Because the cook knows the three guys, he tells the waitress to give them 5$ back. She walks back to the table with the 5$, and because 5$ is not really good to divide by three, the guys tell her only to give 1$ back to each and keep 2$ as tip. And here's the riddle: Everybody has paid 10$ and got 1$ back, that makes 9$, right? 3x9$ is 27$, right? The waitress has 2$, right? 27$ + 2$ is 29$, right? :doh: ?????? Where is the missing DOLLAR ??????? :doh: :confused: Nice Weekend!!!

                      Olli "Ooooooh, they have the internet on computers now!"
                      Homer Simpson
                      :beer: + :java: = NULL :=> X|

                      M Offline
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                      Marc Clifton
                      wrote on last edited by
                      #20

                      The logic flaw is in the very first statement. Olli wrote: Everybody has paid 10$ and got 1$ back, that makes 9$, right? Everyone paid $10 and got back 5/3 of a dollar (5 returned by the cook divided by the 3 people). They then each contributed 2/3 of a dollar to the tip (2/3 * 3 = $2) 5/3 - 2/3 = 3/3, leaving them with with a dollar each. Marc Microsoft MVP, Visual C# MyXaml MyXaml Blog Hunt The Wumpus RealDevs.Net

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                      • A Antony M Kancidrowski

                        Since you started with a maths puzzle here is another. How can this be true? let a = x a+a = a+x [add a to both sides] 2a = a+x [a+a = 2a] 2a-2x = a+x-2x [subtract 2x from both sides] 2(a-x) = a+x-2x [2a-2x = 2(a-x)] 2(a-x) = a-x [x-2x = -x] 2 = 1 [divide both sides by a-x] There is a catch!! See if you can work it out. Ant. I'm hard, yet soft.
                        I'm coloured, yet clear.
                        I'm fruity and sweet.
                        I'm jelly, what am I? Muse on it further, I shall return!
                        - David Williams (Little Britain)

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                        W Offline
                        wrykyn
                        wrote on last edited by
                        #21

                        Dividing both sides by zero. I can use the same thing to prove that 1 hour is equal to one minute. See if you can do that ? :) "One of the Georges," said Psmith, "I forget which, once said that a certain number of hours' sleep a day--I cannot recall for the moment how many--made a man something, which for the time being has slipped my memory."

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                        • D dacris

                          You cannot divide both sides by a-x because a-x = a-a = 0. Can't divide by zero. Every programmer knows that. ;P I have a symbiotic relationship with my computer.

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                          Jerry Hammond
                          wrote on last edited by
                          #22

                          dacris wrote: You cannot divide both sides by a-x because a-x = a-a = 0. Can't divide by zero. Every programmer knows that. Duh! Wanna know why I'm still a hobbiest?

                          The only way of discovering the limits of the possible is to venture a little past them into the impossible.--Arthur C. Clark

                          Toasty0.com

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