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December 21, 2014

December 21, 2014

Posted by **hena(online)** on Tuesday, December 13, 2011 at 7:01pm.

- math -
**Steve**, Wednesday, December 14, 2011 at 12:58pmI assume you want to use an arithmetic progression to fill in the square.

16/2 (a + a + 15d) = 84

8(2a + 15d) = 336

2a+15d = 42

If d is an integer, then 15d needs to be even, and less than 42. So,

a = 6

d = 2

and the numbers to be used are

6 8 10 ... 34 36

Here are a couple of squares that meet your restrictions:

28 8 34 14

16 32 24 12

10 18 20 36

30 26 6 22

--------------------

28 8 34 14

30 18 24 12

20 26 16 22

6 32 10 36

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