Math Help (No-Limit)

No-Limit Hold'em,


A guy I played with for the first time a few months ago limped under-the-gun with pocket aces and knocked me out of a daily tournament. Well I had the same guy again at my table a few nights ago and when he limped UTG I thought "Uh Oh."


It turned out that he had limped with K-2 suited, so I was wondering if you can you approximately determine the chances of this guy actually having pocket aces when he limps UTG with those range of hands? [He also limps with J-6 offsuit on the button]


Thanks