I don't know, sometimes radicals can be irrational.
Paramedics
Twenty. 1 to hold the bulb 2 to turn the ladder and 17 to be on the guest list.
Neither knows a thing. (from another forum)
Umm... I don't know... I've got nothing.
Shallots
Square root of 81
Radicals. He loved finding the "root" of problems...