[Lonesome in Massachussets]

If only 36% can “solve” this problem, that is barely more than one would expect from pure guesswork. More like 4% actually “solve” it, and of the remaining 96% one third, or 32% of the total population just make a lucky guess.

Solve

(1-p)/3 + p = 36% for p

p = 4%

Where p = percentage who actually solve it,
(1-p)/3 = percentage who make a lucky guess.

The more important question, of course, is, “Do you want to pick door No. 2?”

[blueunicorn6]

You keep your p to yourself.