A red cube is cut into 1000 pieces. cubes from 2nd column are removed nd remaining is painted black.1. How many cubes will have more than one surface red ?2. How many cube will have three surface black?3. How many cubes will have one side as red and atleast two sides as black?

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b prakash babu

  • Jun 21st, 2006
 

4 will have 2sides red

8 will have 3sides black

0 cubes has red n black

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premkumar

  • Sep 15th, 2006
 

can you please explain me how to solve problems regarding cubes

most urgent only 1 day left

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Sooraj Prabhakaran

  • Jan 1st, 2007
 

1. 4 cubes (of  2 side which is painted red).

2. 8 cubes (of 3 sides which is painted black ).

3 0 .( red and black already seperated).

antonyshaji15

  • May 3rd, 2010
 

Total 1000 small unit cubes.

The 2nd column of the total cubes has been removed. So, they are painted red.

Remaining cubes which are present are painted black.

Out of the removed 2nd column layer of 6 faces, the front, its opposite, top and bottom coincides. So totally 4 cubes has more than one surface red.

So, total 8 corners of the cube has 3 surfaces painted black.

As the removed layer is painted red and non-removed layer is painted black, cubes having faces painted with black and red is zero.   

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