The statement below is followed by four options. Each option is related to the item in the statement, but only one is always true. Select the option that always holds and makes the statement true.
"A cube always has ______."
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Six faces
The answer must hold for every cube, without exception. An option that is present in most cases but can be missing in even one case is not always true.
Option (1) Edges of 1 cm — a cube can be of any size; a box with all edges 30 cm long is also a cube.
Option (2) Dots on its faces — only a dice has dots; a plain wooden block shaped as a cube has none.
Option (3) Red faces — a cube can be of any colour, or not coloured at all, like an ice cube.
Option (4) Six faces — a cube is a solid with six equal square faces (and 8 vertices, 12 edges); a solid with any other number of faces is not a cube, so this is always true.