If you do not have RPG equipment and a utility belt full of weirdly shaped dice already, you can solve the problem with a standard six-sided die:
- Roll a number x from 1 to 5. To do so roll your die, but if you happen to roll a six, repeat until you don't.
- Roll another number y from 1 to 5.
- Roll a number z from 1 to 6
Note that this gives you 456=150 different outcomes. To turn the outcomes to a number in the range 1-150, compute
(x-1)*30 + (y-1)*6 + z.
