Here is a picture of three towers.
Not all the cubes can be seen in the towers.



Edith uses 1 cube to build tower 1.
Edith uses 6 cubes to build tower 2. There are 5 cubes on the bottom layer.

The sequence below shows the number of cubes used for the bottom layer of each tower.


Here Is A Picture Of Three Towers Not All The Cubes Can Be Seen In The Towers Edith Uses 1 Cube To Build Tower 1 Edith Uses 6 Cubes To Build Tower 2 There Are 5 class=