Which of the four cubes on the right could be another view of the cube on the left? No cube has two identical sides unless they're shown that way in the cube on the left.
Solution
The first two cubes can definitely be other views of the cube on the left. The first cube can be rotated so that the front and top sides switch places, and the second one can be too, by rotating the cube up to show the bottom side. The third and fourth cubes could be other views, but only if the top and front sides in each instance are considered "different." In each case, the top and front sides are identical after a simple rotation.