Question
PSLE
Charlie stacked 10 unit cubes and glued them together to form the solid shown. He painted the whole solid, including the base, red. How many of the 10 cubes had exactly four of their faces painted red?
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PSLE
Charlie stacked 10 unit cubes and glued them together to form the solid shown. He painted the whole solid, including the base, red. How many of the 10 cubes had exactly four of their faces painted red?