Post flop of 2,7,9. There is 900 in the pot. we each have about 7k in chips. If I know my opponent has AA KK QQ or maybe even any AK(due to his better preflop betting), and I have JJ. I have found that there are 18 chances he has a higher pocket pair and 16 chances that he has a form of AK...so likely i'm an underdog to a higher pocket pair, but how many in chips do i need in the pot to make a call/raise, to continue hand? I'm stuck as i realized 1.125 chance i'm an underdog. Even if I'm ahead, he can still catch up....??? help.