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December 31st, 2016, 01:21 PM  #1 
Newbie Joined: Dec 2016 From: New Jersey Posts: 7 Thanks: 1  Really stuck on this. Please help.
A kcity is a k by k grid of positive integers so that every integer greater than 1 is the sum of one integer from the same row and one integer from the same column. Below is an example of a 3city: 1 1 2 2 3 1 6 4 1 Part 1: Make a 5city that has an integer that is greater than or equal to 150. Part 2: Show that for all k ≥ 1, the largest entry in a kcity is, at most, 3^ (k choose 2) 

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calculus, please help, stuck 
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