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Baltic Way
2003 Baltic Way
18
18
Part of
2003 Baltic Way
Problems
(1)
All integers are coloured [Baltic way 2003]
Source:
11/7/2010
Every integer is to be coloured blue, green, red, or yellow. Can this be done in such a way that if
a
,
b
,
c
,
d
a, b, c, d
a
,
b
,
c
,
d
are not all
0
0
0
and have the same colour, then
3
a
−
2
b
≠
2
c
−
3
d
3a-2b \neq 2c-3d
3
a
−
2
b
=
2
c
−
3
d
?[color=#0000FF][Mod edit: Question fixed]
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