Replace Each Letter

Puzzle:

Replace each letter by a digit. Each letter must be represented by the same digit and no beginning letter of a word can be 0.

O N E
O N E
O N E
+ O N E
-------
T E N

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Solution:

Use trial and error. 0 =1, N = 8 ,E = 2, T = 7

1 8 2
1 8 2
1 8 2
+ 1 8 2
------
7 2 8

7 comments:

  1. 4E=N
    4N=E
    4O=T

    MEANS N=E=0, AND 4O=T MEANS YOU CAN CHOSE O AS 1 OR 2 THEN T WILL BE 4 OR
    8

    ReplyDelete
    Replies
    1. I don't understand this logic..please give me a detailed explanation

      Delete
  2. E=2
    N=8
    O=1
    T=7

    182
    182
    182
    + 182
    -----
    728

    Cheers!!!

    ReplyDelete
  3. Given:
    (1) 4E=N+10A
    (2) 4N+A=E+10B
    (3) 4O+B=T
    (4) -1 < E < 10
    (5) -1 < N < 10
    (6) 0 < O < 10
    (7) 0 < T < 10
    (8) N,E,O,T,A,B are integers.
    (9) N!=E!=O!=T

    From (3) & (7) => 4O+B<10 =>
    if O=1 then B < 6 & if O=2 then B < 2 =>

    (10) if B>1 then O=1

    From (2) => A=E+10B-4N
    Combining this with (1) =>
    4E=N+10(E+10B-4N) =>
    4E=N+10E+100B-40N =>
    39N=6E+100B
    Using (5) we have 10 cases for N. In each case I don't consider large B's because E becomes negative:
    1. N=0 => B=0, E=0 => conflict with (9)
    2. N=1 => B=0, E=39/6 => conflict with (8)
    3. N=2 => B=0, E=13 => conflict with (4)
    4. N=3 =>two cases: B=0, B=1
    4.1 B=0, E=117/6 => conflict with (4) for all N > 2, so we don't consider B=0 case anymore.
    4.2 B=1, E=17/6 => coflict with (8)
    5. N=4, B=1, E=56/6 => coflict with (8)
    6. N=5 => B=1, E=95/6 => conflict with (4) for all N > 4, so we don't consider B=1 case anymore.
    7. N=6, B=2, E=17/3 => conflict with (8)
    8. N=7, B=2, E=73/6 => conflict with (8)
    9. N=8 =>two cases: B=2, B=3
    9.1 B=2, E=112/6 => conflict with (4) for all N>7, so we don't consider B=2 case anymore.
    9.2 B=3, E=2 => NO CONFLICT!

    Let's check the rest to make sure this is the only answer:

    10. N=9, B=3, E=51/6 => conflict with (8)

    We got: N=8, E=2, B=3
    Because B=3 & (10) => O=1
    Using the original equasion: T=7
    The answer is:
    N=8, E=2, O=1, T=7
    and we proved that this is the only correct answer.

    ReplyDelete