WOLFRAM
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DEMONSTRATIONS PROJECT
Number of Cubes Removed
s
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z
e
2
3
4
s
h
o
w
h
o
r
i
z
o
n
t
a
l
f
a
c
e
s
n
e
w
m
o
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i
f
F
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n
d
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m
b
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r
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f
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s
!
0
A number of cubes are removed from a block of cubes. Find the number of removed cubes.