I usually don't correct opinions on the internet, but I can't help myself when it comes to numbers, saying the probability is 0% is wrong, even if you mine with a pen and paper your chances will be >0%.
You can't, but someone managed to hit a block with a USB miner with no more than 2TH, this is as random as it gets.
One thing you need to understand is that every block hit happens from 1 single device, actually, not even the whole device, it's a single chip out of a dozen on one of the hashboards inside that miner that would hit a block, if we talk "chances" then that's a different topic, but keeping it general and asking "Is it possible to hit a block with a very low hashrate", the answer is and will always be a "YES".