The answer will depend on whether you mean parallel edges or parallel faces.
Cuboid or cube
A cuboid can have 2, 4 or 6 square faces.
it has six faces
6 faces
A cuboid has 3 pairs of parallel faces.
A cuboid has 6 faces, and each face has a pair of parallel faces. So, a cuboid has 3 pairs of parallel faces. Mathematically speaking, that's the tea, honey.
3 pairs
Three.
21
The answer will depend on whether you mean parallel edges or parallel faces.
Yes, a cuboid does have parallel edges. In a cuboid, all pairs of opposite edges are parallel to each other. Additionally, the opposite faces of a cuboid are also parallel to each other.
Yes, it does.
How many faces of cuboid
A cuboid is one of them.
Cuboid or cube
A Cuboid Has 6 Faces