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The six faces of a three-inch wooden cube are each painted red. The cube is then cut into one-inch cubes along the lines shown in the diagram. How many of the one-inch cubes have red paint on at least one face?

 

 Jul 2, 2021
 #1
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Only ONE will NOT have a red face    ...the one in the dead middle     so 26 WILL have a red face

 Jul 2, 2021
 #2
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The only cube that has no red paint is the one in the middle of the cube. 

Since there are 27 cubes, (3 * 3 * 3), 27 - 1 = 26 cubes that have red paint. 

 Jul 2, 2021

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