3 x 10 x 5

(a)  

7 x 5 x 2

(a)  

3 x 3 x 3

(a)  

1 x 1 x 1

(a)  

9 x 5 x 1

(a)  

10 x 10 x 10

(a)  

5 x 20 x 3

(a)  

100 x 2 x 5=

(a)  

5 x 5 x 5 x 5 =

(a)  

6 x 5 x 10 x 2

(a)