are all dice the same?
As long as the numbers are all present, the die would still be fair and proper, and the probability of rolling any particular number would be constant - 1/6. ... The average of this seriously-deformed dice is: 1 * 1/3 + 2 * 1/12 + 3 * 1/12 + 4 * 1/12 + 5 * 1/12 + 6 * 1/3 = 3.5, the same as a normal dice.