Verbal Reasoning - Cube and Cuboid - Discussion
Discussion Forum : Cube and Cuboid - Cube and Cuboid 2 (Q.No. 1)
Directions to Solve
The following questions are based on the information given below:
- There is a cuboid whose dimensions are 4 x 3 x 3 cm.
- The opposite faces of dimensions 4 x 3 are coloured yellow.
- The opposite faces of other dimensions 4 x 3 are coloured red.
- The opposite faces of dimensions 3 x 3 are coloured green.
- Now the cuboid is cut into small cubes of side 1 cm.
1.
How many small cubes will have only two faces coloured ?
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.
Aditya said:
7 years ago
Since there are 12 edged in the cube front face have 2 faces such as 2 sides painted so total 2*4 (edges of 2 sides painted), similarly when you go by height 1*4, and same breadth 1*4.
So, total (2*4 + 1*4 + 1*4) = 16.
So, total (2*4 + 1*4 + 1*4) = 16.
(1)
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
(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
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.
Drashti said:
1 decade ago
Is the formula given by @Shekhar applicable for any cuboid to find cubes with two side painted?
Nimesh said:
1 decade ago
Its the right explanation. If you go through it practically you would surely get it right.
Deep said:
1 decade ago
From front, how is it 6 cubes. ?
From front only 4 cubes are two face coloured.
From front only 4 cubes are two face coloured.
(1)
Vignesh said:
1 decade ago
I too had problems on left and right side cubes. @Aadharsdha, do you find it?
Aadharsha said:
1 decade ago
I think so 4 from left and 4 from right. 4 cubes have two face colored.
Sakthi said:
1 decade ago
Could not understand how its two from left and right, hope its 3.
Vishal said:
1 decade ago
2 cubes of green yellow face and 4 cubes of yellow red face.
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