72:8

(a)  

5x5

(a)  

7x3

(a)  

9x10

(a)  

4x3

(a)  

32:8

(a)  

15:5

(a)  

7x6

(a)  

20:5

(a)  

56:7

(a)  

81:9

(a)  

40:5

(a)  

40:8

(a)  

20:2

(a)  

20:4

(a)  

9x3

(a)  

9x5

(a)  

6x9

(a)  

6x10

(a)