The previous guy is probably correct already .. ?
In the long run -"that at least one of them will be a King"
But the way I would think of it is that - Initially the Chances are 1 in 3 (2 out of 6) , and IF the King hasn't yet been drawn, there is a 2 out of 5 chance to hit the king .. but yes - previous guy seems to be more clinical with his calculation. I would have said then you add the 2 together giving 0.3333 + 0.4 = 0.7333 or 73.333% chance of hitting a King .. Let me know if I'm close ...
Lol - I could be So wrong heheheh