Question 24
Figures 1, 2 and 3 contain 1, 4 and 10 cubes, respectively. How many cubes are there altogether in Figures 1 to 5?
Continue the same triangular stepped-pile pattern, retaining the hidden supporting cubes indicated by the stated totals 1, 4 and 10.
Continue the same triangular stepped-pile pattern, retaining the hidden supporting cubes indicated by the stated totals 1, 4 and 10.