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Can anyone solve this?
by Anil Babbur - Wednesday, 5 January 2011, 10:09 PM
  A hollow cube of size 5 cm is taken, with a thickness of 1 cm. It is made of smaller cubes of size 1 cm. If one face of the outer surface of the cube are painted, totally how many faces of the smaller cubes remain unpainted?
a) 900 b) 488 c) 563 d) 800


pleas provide an answer to this with explanation.
Re: Can anyone solve this?
by TG Team - Thursday, 6 January 2011, 02:07 PM
 

Hi Anil smile

There are 53 - 33 = 98 smaller cubes being used with a total of 6*98 = 588 faces and out of which 52 = 25 faces are painted which leaves 588 - 25 = 563 unpainted faces of the smaller cubes. smile

Kamal Lohia

Re: Can anyone solve this?
by Anil Babbur - Sunday, 9 January 2011, 01:11 PM
  Thank you so much. smile