What is the S72-R77 aptitude test? IBEW/JATC says I must take it as
part of the application process for the electrician apprenticeship they
offer.

What kind of questions do they ask on the test? What is the best way to
prepare for it?

There is practically no information about it on the internet.

If it requires mathematics besides everyday adding, subtracting,
multiplying and division, I am in trouble, as I have not used this
stuff since about 1997 as a junior in college. Heck, Iv'e forgotten a
lot of stuff about decimals and fractions.

Also, for anyone who has gone through their application process, what
kind of questions can I expect during their interview? Or do they look
at your application, look at your past jobs, and go from there?

If they asked why I want to do this program, the real reason is that I
went to college, made the mistake of majoring in a liberal arts degree,
realized that they have no market value, gave up on college (wonder why
we even go) and decided that the best option for me is to learn a
trade. I do not know if this would be appropriate for me to bring this
up in the interview (probably not).