LIKELIHOOD
(as) likely as not
probably; with an even chance either way.He will as likely as not arrive without warning.Likely as not, the game will be canceled.
be the last person
to be the most unlikely person of whom one could think in a particular situation; to be the most unlikely person to do something.Bob was the last person for Tom to insult. He's so hot-tempered.Mary was the last person to ask to chair the meeting—she's so shy.