Question
PSLE
Justin stacked 8 unit cubes and glued them together to form the solid shown. He painted the whole solid, including the base, brown. How many of the 8 cubes had exactly two of their faces painted brown?
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PSLE
Justin stacked 8 unit cubes and glued them together to form the solid shown. He painted the whole solid, including the base, brown. How many of the 8 cubes had exactly two of their faces painted brown?