by RonPurewal Sun Oct 11, 2015 6:21 pm
in english we call that 'banned source'.
(:
please read the forum rules (first post in the folder) before posting. all banned sources are listed there.
thank you.
this source, in particular, is absolutely awful. nearly EVERY problem—excepting only those that were taken verbatim from GMAC sources—has VERY serious issues.
if you spend much time studying that document, you will probably become worse at GMAT sentence correction as a result.