Latest TCS Aptitude Question SOLUTION: susan made a block with small cube of 8cubic cm volume to make a block 3small cubes long,9small cube wide and 5 small cube deep.she realize that she has use more small cubes than s

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(#M40002885) TCS Numerical Ability question Keep an EYE

susan made a block with small cube of 8cubic cm volume to make a block 3small cubes long,9small cube wide and 5 small cube deep.she realize that she has use more small cubes than she really needed .she realize that she could haave glude a fewer member of cubes together to lock like a block with same dimensions,if it were made hollow.what is the minium number of cubes that she need to make the block
a-114
b-135
c-21
d-71

Asked In TCS (12 years ago)

Unsolved Read Solution (3)

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Read Solution (3) :

shreya sachan  (12 years ago)

as the lenght,breath n ht. of bigger cube is related to small cube.so side of small cube is not relavent.hence....
no of small cubes req. 4r solid cube= 9*5*3=135
no of cubes if we take off them req. to make it hollow= (9-2)*(5-2)*(3-2)=21
hence minimum no of cubes =135-21=114

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KIRAN7  (12 years ago)

given l,b,h of small cube is 2,2,2.
and volume of large cube is 9x5x3.
_______
| ___ |
| | | |
|_|_7_|_|
|_|___|_|
1 7 1
so if we remove 2 cubes from each side we can get the volume of hollow cube i.e 7x3x1
so no. of cubes required is (9x5x3-7x3x1)

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RAHUL KUMAR  (12 years ago)

114
9*5*3-7*3*1

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