Capt Fathom
I suspect were you to perform a strict statistical probability study on variance to the examination process and the results, at least to the long question/s, you might well find that a pass or fail
is a matter of luck, just like in a casino.
The prior study involved, like counting cards in the casino, in all probability
only marginally increases the probability of "success" in your favour. But you gotta do what you gotta do.