a couple of comments.
one:
my understanding is that "invigilator" is the
person supervising the test, not the test algorithm (the other posters on this thread seem to assume that your question is about faulty algorithms).
there's no chance that the person supervising the exam could affect your score. the score is printed out right at the end of the test, without interference from the staff. the only way the staff could affect your score would be by kicking you out of the venue if they caught you doing anything against the rules; since you got a score, this didn't happen.
two:
dave_666 wrote:the test really simple to me and i'm certain I got a huge majority of the questions right.
that's bad.
very bad.
the test is absolutely NOT "simple".
so, if it seemed that way to you, the reality is that the subtleties of the great majority of the problems were probably flying right over your head. you may want to start from scratch, with the EASIEST problems in the official guides, and make sure that you're not making unjustified simplifying assumptions and/or missing out on certain things entirely.
let me repeat: the test is NOT "simple". this casual declaration has me very worried not only about your perception of the test problems, but also about the way in which you study and prepare for the exam.
what did you think was so "simple"?
also, note that, since the test is adaptive, you get
harder problems if you do a
better job on the test. so, ironically, if you perceive the test as "one of the hardest things you've ever done", then there's a good chance that you did amazingly well on it (and thus were being served difficult problems as a result).
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summa veritas:
most gmat problems, especially in the quant section, have subtleties. you should study with those subtleties in mind, and get
takeaways (lessons) from the material accordingly.
Ron has been teaching various standardized tests for 20 years.
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