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Posted by Denis Borris on 5/11/2009, 10:36 pm
A 5by5 matrix contains:
74 at position (2,2)
186 at position (3,5)
103 at position (4,3)
0 at position (5,0)
xxx xxx xxx ??? xxx
xxx 074 xxx xxx xxx
xxx xxx xxx xxx 186
xxx xxx 103 xxx xxx
000 xxx xxx xxx xxx
Here's the question:
Positive Integers are placed in the vacant cells
of the 5x5 matrix above, such that each row and
each column forms an arithmetic progression.
Determine the number which must be placed in the cell marked ???
Think it's possible? I haven't tried yet!
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