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|    sci.math.symbolic    |    Symbolic algebra discussion    |    10,432 messages    |
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|    Message 9,638 of 10,432    |
|    Jeff Barnett to Luke Earles    |
|    Re: Determing if a number is Even or Odd    |
|    26 Sep 17 22:51:16    |
      0e8182e2       From: jbb@notatt.com              Luke Earles wrote on 9/26/2017 7:00 PM:       > If we have an odd number n, then we multiply it by 3 and add one (n*3+1), we       know we will get an Even number p. How can one determine how many times p can       be divided by two before it is odd again?       >       > Another way of asking the same question. if we have (n*3+1)/(2 to some       power), how can we determine if the number produced will be odd or even       depending on the chosen n and the chosen power of two?       >       > Is there a way to symbolize divide by two until odd in a function?       > Thanks for all the help!       >       You are fooling around with the Collatz problem (look it up). Be       careful. it has caused many ardent potential solvers to go blind. There       is a warning to that effect in the Bible or maybe it was in Erdos' "Book".       --       Jeff Barnett              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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