What is the formula for a Rubik's Cube p x q x r?

The formula for a Rubik's Cube of dimensions p x q x r is generally represented as ( V = p \times q \times r ), where ( V ) is the total number of smaller cubes (or "cubies") within the larger cube. In the case of a standard 3x3x3 Rubik's Cube, ( p = q = r = 3 ), resulting in ( V = 3 \times 3 \times 3 = 27 ) smaller cubes. The complexity of solving such a cube can increase with the values of p, q, and r, especially when they differ from one another.