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Thread: Find a given number using two given numbers

  1. #1

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    Find a given number using two given numbers

    Someone posted this on a site I frequent, and I can't figure it out either.

    Ok guys, I've been racking my brain for quite a while trying to figure this out. Basically we have two numbers we can use, and we need to use those two numbers to create a formula for finding the third number. You can use the numbers as many times as you want, but you can only use the numbers provided as long as you find a trustworthy formula. I'll provide two sets of numbers for you to test your formula on.

    Set #1:
    using these two numbers:
    36926104
    33360
    find this number:
    14616

    Set #2
    using these two numbers:
    38221976
    44040
    find this number:
    25084

    To anyone who participates, thankyou so much for your help.

  2. #2
    vbuggy krtxmrtz's Avatar
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    Re: Find a given number using two given numbers

    Quote Originally Posted by Tural
    Someone posted this on a site I frequent, and I can't figure it out either.
    ...and the formula involves what? Just + - * / or some more sophisticated functions? Can you use each number only once?
    Lottery is a tax on people who are bad at maths
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  3. #3
    pathfinder NotLKH's Avatar
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    Re: Find a given number using two given numbers

    It sounds like , Given 2 Numbers, you must divise a formula only using those two numbers in any mathematical combinatorial formula, any number of times, ie...

    If A = 2 and B = 3 and C = 116 then
    (2 + 3)3 - 32 = C

  4. #4
    pathfinder NotLKH's Avatar
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    Re: Find a given number using two given numbers

    So I have a solution to the first one:

    If A = 36926104
    And B = 33360

    Then Lets say C = A mod B
    D = B mod C
    E = C Mod D

    and so on:


    We get:

    A = 36926104
    B = 33360
    C = 29944 (A Mod B)
    D = 3416 [B Mod (A Mod B)]
    E = 2616 [(A Mod B) Mod [B Mod (A Mod B)]]
    F = 800 <[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]>
    G = 216 {[(A Mod B) Mod [B Mod (A Mod B)]] mod <[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]>}
    H = 152 |<[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]> MOD {[(A Mod B) Mod [B Mod (A Mod B)]] mod <[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]>}|


    Now, Lets say W = C-D-D-D-D-D
    Or:

    W=(A Mod B)-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]

    Next Lets say X = W+F+F
    Or:
    X=(A Mod B)-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]+<[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]>+<[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]>

    And Finally, lets say Y=X+H
    Or
    Y=(A Mod B)-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]-[B Mod (A Mod B)]+<[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]>+<[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]>+|<[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]> MOD {[(A Mod B) Mod [B Mod (A Mod B)]] mod <[B Mod (A Mod B)] Mod [(A Mod B) Mod [B Mod (A Mod B)]]>}|


    We end up with Y=14616

    Or:

    14616=(36926104 Mod 33360)-[33360 Mod (36926104 Mod 33360)]-[33360 Mod (36926104 Mod 33360)]-[33360 Mod (36926104 Mod 33360)]-[33360 Mod (36926104 Mod 33360)]-[33360 Mod (36926104 Mod 33360)]+<[33360 Mod (36926104 Mod 33360)] Mod [(36926104 Mod 33360) Mod [33360 Mod (36926104 Mod 33360)]]>+<[33360 Mod (36926104 Mod 33360)] Mod [(36926104 Mod 33360) Mod [33360 Mod (36926104 Mod 33360)]]>+|<[33360 Mod (36926104 Mod 33360)] Mod [(36926104 Mod 33360) Mod [33360 Mod (36926104 Mod 33360)]]> MOD {[(36926104 Mod 33360) Mod [33360 Mod (36926104 Mod 33360)]] mod <[33360 Mod (36926104 Mod 33360)] Mod [(36926104 Mod 33360) Mod [33360 Mod (36926104 Mod 33360)]]>}|

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