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Maths Puzzle
Logical Reasoning
Decision Making and Problem Solving
All faces of cube with an eight-meter edge are painted red. If the cube is cut into smaller cubes with a two-meter edge, how many of the two-meter cubes have paint on exactly one face?
Read Solution (Total 11)
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- 4*6=24 is the ans
- 12 years agoHelpfull: Yes(26) No(25)
- side 1=4 center cubes( out of 16 cubs)
side 2=4 center cubes( out of 16 cubs)
side 3=4 center cubes( out of 16 cubs)
side 4=4 center cubes( out of 16 cubs)
side 5=4 center cubes( out of 16 cubs)
side 6=4 center cubes( out of 16 cubs)
totaly=4*6=24 cubs. - 10 years agoHelpfull: Yes(16) No(0)
- i don't understand pls ans in details....
- 12 years agoHelpfull: Yes(8) No(4)
- There are 6 faces of cube. Imagine one face first. It is of length 8. It is now divided in length of 2. Thus, no. of cubes now is (8/2) is 4 horizontally. There are 4 cubes vertically as well. Thus, total cubes in one face are 4x4=16. But cubes along the sides are painted from other sides as well(Imagine!!) thus, only center 4 cubes are painted on one side. this is for one face... So for 6 faces it is 6x4=24.
- 9 years agoHelpfull: Yes(6) No(2)
- each edges having 16 cubes.
4 out of 16 cube having paint on exactly one face.
hence 6*4= 24 is the answer - 10 years agoHelpfull: Yes(4) No(0)
- The edge of the cube=8
Then it is cut into cubes of edge=2 i.e; 8/2=4 cubes per edge
Now the question asked is no. of small cubes having paint on exactly one face
4*4=16 no. of cubes from one side of the bigger cube satisfies the condition
A cube has 4 sides so 16*4=64
but 4 cubes from 4 corners will have two of their sides painted so no. of cubes with exactly one painted side=64-4=60 - 10 years agoHelpfull: Yes(2) No(9)
- If there are n cubes lie on an edge, then total number of cubes with one side painting is given by 6Ć(nā2)2. Here side of the bigger cube is 8, and small cube is 2. So there are 4 cubes lie on an edge. Hence answer = 24.
- 9 years agoHelpfull: Yes(2) No(1)
- in a 4x4x4 cube there are 24 blocks with one side painted
in one face there are 4 blocks which are painted one side so for 6 faces (6x4)=24 - 10 years agoHelpfull: Yes(1) No(1)
- please explain how each edges having 16 cubes.and why 4 out of 16 cube having paint on exactly one face?
- 9 years agoHelpfull: Yes(1) No(1)
- If there are n cubes lie on an edge, then total number of cubes with one side painting is given by
6
Ć
(
n
ā
2
)
2
. Here side of the bigger cube is 8, and small cube is 2. So there are 4 cubes lie on an edge. Hence answer = 24 - 6 years agoHelpfull: Yes(1) No(0)
- ans is 48
- 9 years agoHelpfull: Yes(0) No(4)
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