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Pooja stacks equal cubes on a grid two squares wide and three deep as shown. How many cubes does she use?

Competition practiceDice & Cubes
  • A8
  • B6
  • C10
  • D9

Step-by-Step Solution

Back row 2 and 2, middle row 2 and 1, front row 1 and 1: . (6 counts the columns.)
Answer: D) 9

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