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How many cube...

Question

How many cubes have at least one face coloured ?

A

27

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B

98

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C

48

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D

121

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Solution

The correct option is A 98
Let us calculate the number of cubes with no painting. By formula, $(n - 2)^{3} = (5 - 2)^{3} = 27$
Therefore, there are $125 - 27 = 98$ cubes having at least one face coloured.

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