Verbal Reasoning - Cube and Cuboid - Discussion

Discussion Forum : Cube and Cuboid - Cube and Cuboid 4 (Q.No. 2)
Directions to Solve

The following questions are based on the information given below:

  1. All the faces of cubes are painted with red colour.
  2. The cubes is cut into 64 equal small cubes.

2.
How many small cubes have no faces coloured ?
24
8
16
0
Answer: Option
Explanation:

Number of small cubes having only one faces coloured = (x - 2)3

Here, x = side of big cube / side of small cube

x = 4 /1

x = 4

Required number = (4 -2)3

= 8

Discussion:
3 comments Page 1 of 1.

Anjali said:   5 years ago
The number of cubes with 0 side painted = (x-2)^3.
As x=4(∛64) ,ans is (4-2)^3=8.

Alen said:   1 decade ago
Its talks about the small CUBES which is inside the BIG CUBE, a 2X2X2 cube will be there inside the big cube remain unpainted !hence the answer 8. hope its helpful :)

Fathima said:   1 decade ago
I can't understand. But they gave the condition like "All the faces of cubes are painted with red colour". Please explain me.

Thanks in Advance.

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