Tiles 1

Example

How many rectangles (not squares) are there?


2
3
4
5
6
 
 
 
 
 
7
8
9
10
11
 
 
 
 
 

Solution

How many rectangles (not squares) are there?




2
3
4
5
6
7
4
5
0
0
7
8
9
10
11
0
1
0
0
0
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Tiles 1
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