Thursday 28 March 2013

magic square 2


Nine of the natural numbers from 1 to 49 have been placed in the  7x7 grid as shown in the figure given below.


  5



 15


 35














 45


 25


 40














 20


 30


 10



Insert   the remaining numbers in the grid to produce a magic square so that the sum of the numbers in any of the horizontal rows, vertical columns and corner to corner diagonals is 175.



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