X1 is a 3D form generated from the shape X, using certain 3D operations. It has 14 surfaces in total. The same operations are carried out on shape Y. How many surfaces would the resulting 3D form have? [Figure: see page 4 of source PDF]

While Lilo was playing with a toy tractor, she rolled it over an ink drop. The image on the right shows the ink drop and the marks on the floor left by tractor's wheels. The diameter of the back wheel of the tractor is 1.5 times that of its front wheel. What is the number of revo…

Count the total number of triangles. [Figure: see page 4 of source PDF]

Two views of a solid object are shown. Count the number of surfaces. [Figure: see page 3 of source PDF]

What is the shortest distance (in cm) for the red dot to reach the position x? The dot can travel only along the grid lines shown. [Figure: see page 4 of source PDF]

What is the number of differences between the two images? [Figure: see page 5 of source PDF]

The figure shows two views of an object. What is the least volume of a rectangular box required to pack six such objects? [Figure: see page 5 of source PDF]

The figure shows two views of the same solid. Count the number of surfaces. [Figure: see page 6 of source PDF]

The front view of a solid object is shown in the image. If the views from all six sides are the same, how many surfaces does it have? [Figure: see page 3 of source PDF]