math
posted by Lisa .
make a 5 by 5 tile uisng 5 different colors. None can be in the same row nor be diagional.

let g=green; b=blue; r=red; y=yellow; o=orange
This is one example
g,b,r,y,o
r,y,o,g,b
o,g,b,r,y
b,r,y,o,g
y,o,g,b,r
Notice that the order is the same in each line, shifted by 2
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