This shirt puzzle is trickier than simply counting the visible tears.
There are seven large torn areas. Because the background can be seen through them while the shirt’s front and back are aligned, each tear passes through two layers:
7 × 2 = 14 holes
Now include the shirt’s four normal openings: the neck, two sleeves, and the bottom.
14 + 4 = 18
Answer: There are 18 holes in the shirt.


