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Math Help - [SOLVED] Help with this puzzle

  1. #1
    fs8456
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    [SOLVED] Help with this puzzle

    See if you can figure out the code using only these data.

    752750175 = ||...|.|.|...|.||...|.|.|.||......|||...|.|.|....| ||

    168026300 = |...||.||..|..|.||.....|.|.||....||.||...||....|.. ||

    856217314 = ||..|..|.|..||....|.|...|||...|..||....||.|..|..|| .|

    What is the pattern? What are the rules? Explain how you got it.

    What is the code for each digit, especially 9 which does not appear in the data set?
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  2. #2
    Bar0n janvdl's Avatar
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    Quote Originally Posted by fs8456 View Post
    See if you can figure out the code using only these data.

    752750175 = ||...|.|.|...|.||...|.|.|.||......|||...|.|.|....| ||
    Look at this:

    75 is present in the array 3 times.

    We know that 7 starts with ||... etc etc

    Comparing the first 75 with the last one however, there seems to be some problem:
    Code:
    First:  ||...|.|.|...|.||
    
    Second: ||...|.|.|....|||
    I'm assuming you made a typo, but this is already a start. From here you can distinguish between 7 and 5 and so forth until you have succeeded in deciphering the entire first number.
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  3. #3
    Super Member angel.white's Avatar
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    Quote Originally Posted by janvdl View Post
    Look at this:

    75 is present in the array 3 times.

    We know that 7 starts with ||... etc etc

    Comparing the first 75 with the last one however, there seems to be some problem:
    Code:
    First:  ||...|.|.|...|.||
    
    Second: ||...|.|.|....|||
    I'm assuming you made a typo, but this is already a start. From here you can distinguish between 7 and 5 and so forth until you have succeeded in deciphering the entire first number.
    Also, there are 22 lines and 30 dots in each of the three. And a space between the 2nd and 3rd from the last on all three. I looked at this a while, but couldn't come up with anything better than that. However, it seems unlikely that there is a straight number to code translation, because there are 9 digits but 52 code units (53 if you include the space)
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  4. #4
    Bar0n janvdl's Avatar
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    I'm curious as to what this is for...
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  5. #5
    Super Member angel.white's Avatar
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    Quote Originally Posted by janvdl View Post
    I'm curious as to what this is for...
    Hacking government security network?!?!?! OH NOZ!

    Someone go find us a Navajo.
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  6. #6
    Bar0n janvdl's Avatar
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    Quote Originally Posted by angel.white View Post
    Hacking government security network?!?!?! OH NOZ!

    Someone go find us a Navajo.
    No i don't think government security would be that easy. This is way too easy to crack. I'll crack it within 30 minutes if i sat with it and did it.

    What's a Navajo?
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  7. #7
    Super Member angel.white's Avatar
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    Quote Originally Posted by janvdl View Post
    No i don't think government security would be that easy. This is way too easy to crack. I'll crack it within 30 minutes if i sat with it and did it.

    What's a Navajo?
    During World War 2, the U.S. Military brought Navajo Indians on board. They made a code that involved translating from Navajo to English then using the English words to decipher the code.

    Code talker - Wikipedia, the free encyclopedia
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  8. #8
    Member Henderson's Avatar
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    Looks like the US Postal bar code, for any ZIP+4 code.

    This should explain it: How to Read Postal Bar Codes

    Your examples do not use the "Last 2 digits of Street Address" section, but do use the Check Digit.
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  9. #9
    Super Member angel.white's Avatar
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    Quote Originally Posted by Henderson View Post
    Looks like the US Postal bar code, for any ZIP+4 code.

    This should explain it: How to Read Postal Bar Codes

    Your examples do not use the "Last 2 digits of Street Address" section, but do use the Check Digit.
    You're right, that's why I didn't figure it out earlier, I thought about the first and last being "frame bars" but didn't figure the last 5 went to an invisible digit.
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