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DPChallenge Forums >> General Discussion >> I got goose bumps from this "game"....
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10/16/2007 10:49:08 PM · #1
I have no idea how this is done.

I tried several times, and the darn "game" is psychic.

You give it a try, and tell me how this is done.

Creepy.

Magic Gopher
10/16/2007 10:56:18 PM · #2
Your answer will always be a multiple of 9. When you add the digits together, you are getting the difference between your first number and a multiple of nine, so subtracting it will bring your number to a multiple of nine. It is because the sum of the digits of any multiple of 9 adds to 9. Notice that all multiples of nine correspond to the same symbol, and therefore the "magic gopher" is always correct.

Mark
10/16/2007 10:56:47 PM · #3
Originally posted by Man_Called_Horse:

I have no idea how this is done.

I tried several times, and the darn "game" is psychic.

You give it a try, and tell me how this is done.

Creepy.

Magic Gopher

Nm... beat to the response again :P

Message edited by author 2007-10-16 22:57:12.
10/16/2007 11:00:08 PM · #4
Alas its just maths

Number - digits added together - 1st number - second number

10 1 9
11 2 9
12 3 9
13 4 9
14 5 9
15 6 9
16 7 9
17 8 9
18 9 9
19 10 9
20 2 18
21 3 18
22 4 18
23 5 18
24 6 18
25 7 18
26 8 18
27 9 18
28 10 18
29 11 18
30 3 27
31 4 27
32 5 27
33 6 27
34 7 27
35 8 27
36 9 27
37 10 27
38 11 27
39 12 27
40 4 36
41 5 36
42 6 36
43 7 36
44 8 36
45 9 36
46 10 36
47 11 36
48 12 36
49 13 36
50 5 45
51 6 45
52 7 45
53 8 45
54 9 45
55 10 45
56 11 45
57 12 45
58 13 45
59 14 45
60 6 54
61 7 54
62 8 54
63 9 54
64 10 54
65 11 54
66 12 54
67 13 54
68 14 54
69 15 54
70 7 63
71 8 63
72 9 63
73 10 63
74 11 63
75 12 63
76 13 63
77 14 63
78 15 63
79 16 63
80 8 72
81 9 72
82 10 72
83 11 72
84 12 72
85 13 72
86 14 72
87 15 72
88 16 72
89 17 72
90 9 81
91 10 81
92 11 81
93 12 81
94 13 81
95 14 81
96 15 81
97 16 81
98 17 81
99 18 81

Doh beaten to the punch, substantially :)

Message edited by author 2007-10-16 23:00:55.
10/16/2007 11:01:49 PM · #5
Originally posted by Mark:

Your answer will always be a multiple of 9. When you add the digits together, you are getting the difference between your first number and a multiple of nine, so subtracting it will bring your number to a multiple of nine. It is because the sum of the digits of any multiple of 9 adds to 9. Notice that all multiples of nine correspond to the same symbol, and therefore the "magic gopher" is always correct.

Mark


And they randomly show you a different symbol for multiples of 9 each time, so when you do it repeatedly, you don't always see the same symbol.
10/16/2007 11:22:45 PM · #6
Let's use algebra to prove it, people:

If your number is ab (i.e. 43, a=4, b=3). So, to get 43, you multiply a*10 and add b. The gopher tells you to subtract a+b, so:

a*10+b - (a+b) =
a*10-a + b-b =
a*9

Therefore, the result is assuredly a multiple of 9. In fact, always (first digit times 9). And as stated above, all the multiples of 9 show the same symbol.

Magic Algebra! =D
10/16/2007 11:33:17 PM · #7
.

Message edited by author 2007-10-16 23:34:09.
10/17/2007 10:37:58 PM · #8
I understand the math and all that. I kind of figured there was some sort of math involved.

HOWEVER, without me, or you, or anyone else typing into the game the numbers we have chosen. Keeping the number close to the vest. Not showing our hand, as it were.

HOW DID THE GOPHER KNOW WHICH SYMBOL TO PICK????

Answer me this question, and I will sleep better tonight.
10/17/2007 11:03:11 PM · #9
Originally posted by Man_Called_Horse:

I understand the math and all that. I kind of figured there was some sort of math involved.

HOWEVER, without me, or you, or anyone else typing into the game the numbers we have chosen. Keeping the number close to the vest. Not showing our hand, as it were.

HOW DID THE GOPHER KNOW WHICH SYMBOL TO PICK????

Answer me this question, and I will sleep better tonight.


They change the symbols every time you play the game. But look closely at the chart next time; note that EVERY number divisible by 9 has the same symbol (along with a few that are not divisible by 9, for window dressing). Because it is the nature of the equation that the end result will always be divisible by 9, the gopher always has the right symbol.

Now, if your gopher actually gave you the NUMBER you had picked, THAT would be eerie :-)

R.

Message edited by author 2007-10-17 23:34:43.
10/17/2007 11:06:34 PM · #10
Now that makes sense.

Thanks Robert for making is simple for me.

Going to sleep good 2 night.
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