3 x 3 =

(a)  

4 x 4 =

(a)  

5 x 5 =

(a)  

6 x 6 =

(a)  

7 x 7 =

(a)  

8 x 8 =

(a)  

9 x 9 =

(a)  

10 x 10 =

(a)  

11 x 11 =

(a)  

12 x 12 =

(a)