Find the Number of Cubes Removed

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4

5

n

4

5

6

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4

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6

show layers from top to bottom

new motif

Find

the number

of removed

cubes!

0

False

A rectangular solid consists of small white cubes. A number of the cubes are removed by punching out all the cubes in the designated columns from front to back, top to bottom, and side to side. Find the number of removed cubes.