Tiles 1

 

 

 

 

 

Example

How many rectangles (not squares) are there?


Numbers of tiles / Numbers of rectangles:

2
3
4
5
6
 
 
 
 
 

 

Numbers of tiles / Numbers of rectangles:

7
8
9
10
11
 
 
 
 
 

Solution

How many rectangles (not squares) are there?




Numbers of tiles / Numbers of rectangles:

2
3
4
5
6
7
4
5
0
0

 

Numbers of tiles / Numbers of rectangles:

7
8
9
10
11
0
1
0
0
0
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