Regular dice are made such that opposite sides of the die add to 1+the number of sides. For example, a 20-sided die has 14 and 7 opposite of each other, adding to 21.
For certain types of games, "life counter" die are used. In these, sides are numbered sequentially, so that 1 is next to 2, which is next to 3, which is next to 4, and so on. You can see a picture here: http://www.coolstuffinc.com/main_supplies.php?fpid=Acc-QWSd20SpindownLifeCounterBluewhite
Now the question: generally speaking, will these two kinds of die yield equal probabilities? (Assuming that both dice are well balanced).
- Will the probability of getting a certain number be the same?
- Will the probability of getting a number above a threshold be the same? (i.e. rolling a 10 or more)