"Chances ____" (3)
'chances' is the definition.
(the odds of something happening)
This is all the clue.
(Other definitions for odds that I've seen before include "The likelihood of something occurring rather than not" , "Chances, probability" , "Likelihood of something happening" , "The chances of something happening" , "at this is in dispute" .)
(Other definitions for are that I've seen before include "is for more than one" , "Era (anag.)" , "live" , "(They/you/we) exist" , "(We/you/they) exist" .)