Math riddle

ArmenK

Golden Member
Oct 16, 2000
1,600
1
0
how can dot-dot=dot sometimes and dot-dot=0 at other times?

edit: unless dot=zero... then A=1, but that doesnt really work
 

dighn

Lifer
Aug 12, 2001
22,820
4
81
Originally posted by: ArmenK
how can dot-dot=dot sometimes and dot-dot=0 at other times?

edit: unless dot=zero... then A=1, but that doesnt really work

i think "dot" can represent more than 1 digit
 

ArmenK

Golden Member
Oct 16, 2000
1,600
1
0
Originally posted by: dighn
Originally posted by: ArmenK
how can dot-dot=dot sometimes and dot-dot=0 at other times?

edit: unless dot=zero... then A=1, but that doesnt really work

i think "dot" can represent more than 1 digit

of course, dumb me :eek:
 

OulOat

Diamond Member
Aug 8, 2002
5,769
0
0
I'm pretty sure the A = 3, given that A and * are in the single digit range.

NM, 3 won't work.

Yeah, just checked all the single digits, no dice for any of them.
 

BigJelly

Golden Member
Mar 7, 2002
1,717
0
0
A=8

its long division of 3527876/484=7289

i have no life

becomes
...............7289
484|3527876
.......-3388
...........1398
............-968
.............4307
............-3872
................4356
...............-4356
........................0

EDITED: Added explainition
It was actually kind of simple
once you learn you multiplication chart you would realize that the only possible numbers for A are 2, 4, 6, or 8 because only these numbers when multiplied by two different numbers have the same number at single digit #. IE 2*4=8 and 2*9=18
From this you you realize the only possiple combinations of A and ~ from *A~|****A** are 42, 62, 82, 24, 26, 28, 62, 64, 68, 82, 84 and 86.
Only 84 (A=8 and ~=4) works for A~*x=**AA and A~*y=**A.
Thus you get the 728z for the answer to the long division. z was very easy to solve because z had to be greater than 2 (4 digits) and couldnt contain a 8 (A). This left only z=3,4,5,6,or9. And only when z=9 does a 8 show up in the A position of *A*|****A**
 

Jgtdragon

Diamond Member
May 15, 2000
3,815
11
81
Originally posted by: BigJelly
A=8

its long division of 3527876/484=7289

i have no life

becomes
...............7289
484|3527876
.......-3388
...........1398
............-968
.............4307
............-3872
................4356
...............-4356
........................0

EDITED: Added explainition
It was actually kind of simple
once you learn you multiplication chart you would realize that the only possible numbers for A are 2, 4, 6, or 8 because only these numbers when multiplied by two different numbers have the same number at single digit #. IE 2*4=8 and 2*9=18
From this you you realize the only possiple combinations of A and ~ from *A~|****A** are 42, 62, 82, 24, 26, 28, 62, 64, 68, 82, 84 and 86.
Only 84 (A=8 and ~=4) works for A~*x=**AA and A~*y=**A.
Thus you get the 728z for the answer to the long division. z was very easy to solve because z had to be greater than 2 (4 digits) and couldnt contain a 8 (A). This left only z=3,4,5,6,or9. And only when z=9 does a 8 show up in the A position of *A*|****A**

Winner!