How many time did that take? 
Once, and it was actually first thing this morning before I'd done anything but feed the cats and use the terlet. Some of them were lucky guesses, and some of them were the "nearest wrong answer" since the test writers didn't actually provide the right answer, but mostly it's just simple arrows and basic multiplication...not too tough if you take your time on it.
I only got halfway through engineerification, by the way. One of the great regrets of my life...but that's another thread
