A very simple puzzle which concerns, not a set of dice, but just one die. And rather than dots, there are
numbers to make it easier. The question is, which of the shapes can be folded up along the dotted lines to
form a die. The key is knowing that dice always have opposite sides adding up to 7.
The answer is
here.
The answer is diagram C. The rest form cubes but not a die.
Another question though.
Which of these dice is a fake and which is a true die?