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by mariah » Fri Jan 23, 2009 1:35 pm
33.A pile of cubes: there are 81 cubes in the lowest layer; after that, both the number of the lines and the cube in each lines is one less than that in the layer under it.

283; 284; 285; 287; 190;

pls explain
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by awesomeusername » Fri Jan 23, 2009 1:51 pm
So what is the question?
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by mariah » Sat Jan 24, 2009 7:40 am
number of cubes in pile
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by aroon7 » Sat Jan 24, 2009 7:51 am
sorry, what is the number of line here?
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i am back!
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