Lining up by random number
Basic drawA method that gives each entrant one random number, then lines everyone up by that random number's order to decide the winners.
Hand Out Random Numbers and Line Up
Assign each entrant (or each entry) one random number. Then line everyone up in one row by that number, and the front of the line becomes the win priority.
The Seed Decides Direction — Odd Ascending · Even Descending
If the initial seed value is odd, line up ascending (smaller random numbers first); if even, descending (bigger numbers first). Since even the direction is fixed by the seed, an organizer cannot pick it arbitrarily.
Skip Anyone Already Won
In mass entries, one person can enter multiple times, so the same person can appear more than once in line. Check winners in order from the front of the line, and if someone already won comes up again, pass that entry and move to the next.
Try Lining Up Yourself (5 people · 3 winners)
These are entries from A·B·C·D·E. A and B entered twice each. Change the seed to see how the ascending/descending sort direction changes and how duplicates get passed. (In this experiment the initial seed only decides the sort direction, and random numbers are drawn fresh each time.)