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Maximum no of square

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Maximum no of square

by ajaykpat » Sat Jul 30, 2011 5:10 am
What is the maximum number of 3X3 squares that can be generated from the
square of 6X6 checker board.

(A) 4
(B) 6
(C) 12
(D) 16
(E) 24

OA is D ...

I am very much confused on how to approach on this.
Do we have any specific method for solving this kind of problem...
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by ankushjain » Sat Jul 30, 2011 5:42 am
On X Axis out of 6 checker the possible way that such a 3X3 square can be there are 4 ways.

On Y axis same way there are 4 ways.

total = 4X4 = 16 ways.
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