document.write( "Question 287587: Each of the 12 edges of a cube is coloured either red or green. Every face of the cube has at least one red edge. What is the smallest number of red edges?\r
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Algebra.Com's Answer #208540 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
an edge is the intersection of a pair of faces\r
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\n" ); document.write( "\n" ); document.write( "a cube has 6 faces (3 pairs)\r
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\n" ); document.write( "\n" ); document.write( "so the smallest number of red edges is 3
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