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Verbal Reasoning - Cube and Cuboid - Discussion

Discussion Forum : Cube and Cuboid - Cube and Cuboid 2 (Q.No. 1)
Cube and Cuboid
Directions to Solve

The following questions are based on the information given below:

  1. There is a cuboid whose dimensions are 4 x 3 x 3 cm.
  2. The opposite faces of dimensions 4 x 3 are coloured yellow.
  3. The opposite faces of other dimensions 4 x 3 are coloured red.
  4. The opposite faces of dimensions 3 x 3 are coloured green.
  5. Now the cuboid is cut into small cubes of side 1 cm.
1.
How many small cubes will have only two faces coloured ?
12
24
16
12
Answer: Option
Explanation:

Number of small cubes having only two faces coloured = 6 from the front + 6 from the back + 2 from the left + 2 from the right

= 16

Discussion:
19 comments Page 1 of 2.
Udayakumar said:   1 decade ago
Can anyone please explain this?
Santosh said:   1 decade ago
Please explain this problem.
Narendra kirar said:   1 decade ago
Please suggest any simple and shortcut answer.
Sakthi said:   1 decade ago
Could not understand how its two from left and right, hope its 3.
Mrudula said:   1 decade ago
Can some one explain this?
Shekhar Ghate said:   1 decade ago
The formula for cubes having two sides painted is
(L-2)x4 + (B-2)x4 + (H-2)x4 Where L = Length, B= Breadth, H=Height
In the above problem it is (4-2)x4 + (3-2)x4 + (3-2)x4
i.e 8 + 4 + 4 = 16
Prasanna said:   1 decade ago
Thank you shekar.
Raghavan said:   1 decade ago
Hi, refer the picture again. Note the Between the right side top cornor. The cube having 2 colored faces. Simultaneously bottom side cube having 2 colored faces. Thats why 2 came.
Raghavan said:   1 decade ago
Could you tell me how does L-2*4 comes?
Deep said:   1 decade ago
From front, how is it 6 cubes. ?

From front only 4 cubes are two face coloured.
(1)
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