Question 24
A square-based pyramid is built using cubic blocks, 1 on top, 4 on the next layer, 9 on the next, 16 on the next, and so on.
What is the minimum number of blocks needed if the pyramid is to be dismantled and rebuilt into 2 separate cubes with no blocks left over?
What is the minimum number of blocks needed if the pyramid is to be dismantled and rebuilt into 2 separate cubes with no blocks left over?