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World Engineering Day Quiz!


By Kuo-Chang


math quiz

A checkerboard made as a 7 x 7 matrix has a green basic cell placed in its middle as shown in the above structure.

Questions:

  1. How many squares, defined in that matrix, are covering the green cell?
  2. Can you extend the problem to any matrix size (i.e., n * n with n odd)? For example, what would be the answer for a 99 * 99 matrix?




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[edited by: ambugua at 3:20 PM (GMT -4) on 9 Mar 2026]
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