1980 Canadian MO Problems/Problem 2
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Problem 2
The numbers from 
to 
are printed on cards. The cards are shuffled and then laid out face up in 
rows of 
cards each. The cards in each row are rearranged to make them increase from left to right. The cards in each column are then rearranged to make them increase from top to bottom. In the final arrrangement, do the cards in the rows still increase from left to right?
