I shouldn't try doing math with this head cold I am only a monkey after all.

You are right ......... There's no need to calculate the probability of hitting the cards in the reverse order (i.e. B then A). Those reverse events were already included in the A then B scenario calculation. That clears that up.

I'm still not understanding this 1.5 or 1/2 an out business that ElipseJeff was alluding to.

Can anyone shed some light on this? I'd love to know how to calculate/derive these numbers and more importantly how to put them to use.