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Interview Question for Software Engineer at Goldman Sachs:
Mar 1, 2011
Assuming you have a large cube shaped by small cubes together, their number is 1000 How many cubes will be visible?
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2 of 2 people found this helpful
Mar 7, 2011
A cube will have n^3 sub cubes. With some guessing you get to 10^3 = 1000.
Now the cube that fits within the 10^3 cube is a 8^3 cube (take off one layer from each side). So the total number of outer faces is 10^3 - 8^3 = 488.
Now the cube that fits within the 10^3 cube is a 8^3 cube (take off one layer from each side). So the total number of outer faces is 10^3 - 8^3 = 488.
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0 of 1 people found this helpful
Mar 7, 2011
right another way of solving it which I think is better
Thanks,
Kiki
Thanks,
Kiki
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