There are four people drawing lots. . .

That is, no one draws the same opposite, and some people draw the same thing, that is, at least two people.

A 100: 4 = first person 100 may *99 (the second person cannot be the same as the first person) *98 (not the same as one or two people) *97.

All combinations are 100 4,1-100 * 99 * 98 * 97/1004 = 5.9%.