No perfect square can end in 2.
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A square prism (a cuboid with at least two square faces at its ends).
There are none.
You can tell whether a number is a square number by looking at the last digit. A perfect square number ends with either 1, 4, 5, 6, 9 or 00.
A square prism is one whose two ends are square and the remaining 4 faces are rectangles.