Monty Hall

[andrewducker]

[Poll #1770413]

Explanation

I have known what the answer was for ages, but for some reason it only "clicked" in my head today. You can blame sarahs_muse for triggering it.

Comments

[lizw.livejournal.com]

If instead I took a sample of both velociraptor's DNA, mixed them together and said "Hey I've found some Y chromosomes, at least one velociraptor is male" THEN the probability that both are male is 1/3.'

This is brilliant.