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Was Saturdays PB drawing odd?

Topic closed. 12 replies. Last post 9 years ago by smooththaboss.

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Bagent's avatar - avatar 10424.gif
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Posted: November 11, 2007, 5:38 pm - IP Logged

Is it just me or was the drawing on Saturday odd in that all the balls drawn, including PB were even numbers?  I don't remember ever seeing a drawing with all the numbers being all odd or all even numbers.

 

Bagent

    Guru101's avatar - rw6jhh
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    Posted: November 11, 2007, 5:50 pm - IP Logged

    Is it just me or was the drawing on Saturday odd in that all the balls drawn, including PB were even numbers?  I don't remember ever seeing a drawing with all the numbers being all odd or all even numbers.

     

    Bagent

    How is it odd? It's going to happen every now and then.

    Gonna win.Big Smile

      fja's avatar - gnome1

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      Posted: November 11, 2007, 7:28 pm - IP Logged
      odd923475355 3902/22/06
      even410202640 806/07/06
      even232384450 2007/19/06
      even24263842461608/26/06
      odd319333543108/30/06
      odd929314555710/21/06

       

      Only thing surprising is that this is the first time it has happened in 2007!!!

      "Everybody has to believe in something...I believe I'll have another beer!"   = W.C.Fields                      

        Raven62's avatar - binary
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        Posted: November 11, 2007, 11:14 pm - IP Logged

        Is it just me or was the drawing on Saturday odd in that all the balls drawn, including PB were even numbers?  I don't remember ever seeing a drawing with all the numbers being all odd or all even numbers.

         

        Bagent

        No: It was All Even!

        A mind once stretched by a new idea never returns to its original dimensions!

          Bagent's avatar - avatar 10424.gif
          Vancouver, WA
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          Posted: November 12, 2007, 1:51 am - IP Logged
          odd923475355 3902/22/06
          even410202640 806/07/06
          even232384450 2007/19/06
          even24263842461608/26/06
          odd319333543108/30/06
          odd929314555710/21/06

           

          Only thing surprising is that this is the first time it has happened in 2007!!!

          Well, that explains it.  Have been monitoring lottery sites on regular basis since Feb of this year. :)

            spy153's avatar - maren

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            Posted: November 12, 2007, 2:06 pm - IP Logged
            odd923475355 3902/22/06
            even410202640 806/07/06
            even232384450 2007/19/06
            even24263842461608/26/06
            odd319333543108/30/06
            odd929314555710/21/06

             

            Only thing surprising is that this is the first time it has happened in 2007!!!

            Thanks, fja, I was thinking it was a little unusual myself.  So, we can expect at least some more of these types of draws?

            voir-vous dans mes reves!Cool

              johnph77's avatar - avatar
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              Posted: November 12, 2007, 8:06 pm - IP Logged

              With the same number of odd and even numbers in a matrix (there aren't in PowerBall, there are in MegaMillions) the chances of all odd and/or all even are 1::64. With a 5/55 matrix in Powerball the chances are slightly better that all odd numbers will show rather than all even.

              Blessed Saint Leibowitz, keep 'em dreamin' down there..... 

              Next week's convention for Psychics and Prognosticators has been cancelled due to unforeseen circumstances.

               =^.^=

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                Posted: November 13, 2007, 3:26 am - IP Logged

                Well, that explains it.  Have been monitoring lottery sites on regular basis since Feb of this year. :)

                Monitoring lottery results only tells you what has happened, not what can happen, and a couple of hundred results are meaningless when there are millions of possible outcomes.

                As John notes, for lotteries with an even number of numbers the chances of all odd or all even numbers will be the same.  The odds for all numbers in the bottom half or all numbers in the top half will also be the same. You can split the numbers up in any fashion you want, but it will always be the same. You're looking at the chances of all the numbers coming from some (arbitrary) half of the possible numbers.

                In the case of megamillions, there are 56 regular numbers and 46 mega balls.  No matter how you split them in half, there will be 28 regular numbers and 21 mega balls in that half. Picking 5 numbers from 28, there are 98,280 possible combinations. With 23 possibilities for the mega ball there will be a total of 2,260,440 possible combinations using half of the numbers. With all of the numbers there are 175,711,536, or 77.7 times as many as with only half of the numbers. That means that we should expect the winning combination to be all odd in about 1 of every 78 drawings. We should also expect  the winning combination to be all even in about 1 of every 78 drawings, all from the lower half of the number range in about 1 of every 78 drawings, and all from the upper half of the number range in about 1 of every 78 drawings.  Combining all of the four "unusual" results, we should expect them in 4 of 78 or 1 in 19 or 20 drawings. That's about once every nine or ten weeks.

                For MM you only need to go back to 9/21 to find all odd numbers.  On 8/28 all of the MM numbers were well into the top half of the range. You need to go back to 4/10 to find numbers in the bottom half of the range, and 1/12 for all even numbers.  That's all four of the "obvious" halves in about 94 drawings.  On 2/9 all of the numbers were in the top half, so that's a total of 5 in 94 drawings, which is almost exactly what probability suggests.

                  fja's avatar - gnome1

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                  Posted: November 13, 2007, 6:30 am - IP Logged

                  Thanks, fja, I was thinking it was a little unusual myself.  So, we can expect at least some more of these types of draws?

                  well, if you read the post above you will have your answer....I would have just said "yes" to your question......

                  "Everybody has to believe in something...I believe I'll have another beer!"   = W.C.Fields                      

                    spy153's avatar - maren

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                    Posted: November 13, 2007, 8:21 am - IP Logged

                    well, if you read the post above you will have your answer....I would have just said "yes" to your question......

                    a simple "yes" would have sufficed.

                    voir-vous dans mes reves!Cool

                      RJOh's avatar - chipmunk
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                      Posted: November 13, 2007, 3:49 pm - IP Logged

                      Is it just me or was the drawing on Saturday odd in that all the balls drawn, including PB were even numbers?  I don't remember ever seeing a drawing with all the numbers being all odd or all even numbers.

                       

                      Bagent

                      Since the matrix changed to 5/55 + 1/42 on 08/31/2005 there have been 230 drawings and 114 had an even PB number and some even WB numbers:

                      0+1  x  3   times
                      1+1  x  12
                      2+1  x  30
                      3+0  x  45
                      3+1  x  46
                      4+0  x  15
                      4+1  x  20
                      5+0  x  5
                      5+1  x  3

                       * you don't need to buy more tickets, just buy a winning ticket * 
                         
                                   Evil Looking       

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                        Posted: November 15, 2007, 9:27 am - IP Logged

                        Seeing it on the last draw wasn't all that unusual.  It DOES happen and it's been awhile....   But two in a row is probably unprecedented.

                        But in a random system, with each draw being mutually exclusive, it's bound to happen over time.  Nevertheless, I'm betting that an odd number or two shows up on Saturday. Sulk Off


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                          Posted: November 22, 2007, 4:13 am - IP Logged

                          was odd indeed