Cube (algebra) however, easy to show that most numbers are not perfect cubes because "all" perfect cubes must have digital root 1, 8 or 9. That is their values modulo 9 may be only −1, 1 and 0. Moreover, the digital root of any number's cube can be determined by the remainder the number gives when divided by 3: Every positive integer can be written as the sum of nine (or fewer) positive cubes. This upper limit of nine cubes cannot be reduced because, for example, 23 cannot be written as the sum of fewer than nine positive cubes: The equation has
Cube (film series) the maze, while also trying to solve the mystery of what the cube is and why they are in it. However, the pressure of being in the Cube generally turns one of the prisoners into a homicidal maniac who preys on the others. "Cube Zero" was slightly different from the first two films in that it also dealt with the people on the outside of the Cube whose job it was to control the cube and oversee those within. A fourth film was rumored in March 2011, and a remake of the first film was announced in April 2015. In