A cuboid has ............. pairs of identical faces.
3
A cuboid is a solid bounded by six rectangular faces. Every face has exactly one face opposite to it, and opposite faces of a cuboid are congruent rectangles, that is, identical in shape and size.
Step 1 — Count the faces: a cuboid has 6 faces (top and bottom, front and back, left and right).
Step 2 — Group them in opposite pairs: top–bottom (length × breadth), front–back (length × height) and left–right (breadth × height). Six faces form 6 ÷ 2 = 3 pairs of identical faces.
Two pairs would account for only four faces, while four or five pairs would need eight or ten faces, which a cuboid does not have.
3 option is correct.
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