duongthang -
I would say that the Official Guide does declare the rules (although they do not use the clearest terminology!)
Many Official questions have explanations that say that the incorrect answer is "too wordy." The OG often refers to the correct answer as "concise."
They OG may not list the rules, but if you stick with the BTG experts we will try to break it down for you.
Just don't get caught up in all of the memorization. People want to have a list that they can memorize. But the GMAT is not like that and guess what Business School is not like that and business is not like that either.
You have some principles to guide you - Grammar, parallelism, comparisons, subject-verb agreements, brevity, clarity, specificity, etc. But you have to then be flexible and apply the principles to the questions at hand.
I would say that the Official Guide does declare the rules (although they do not use the clearest terminology!)
Many Official questions have explanations that say that the incorrect answer is "too wordy." The OG often refers to the correct answer as "concise."
They OG may not list the rules, but if you stick with the BTG experts we will try to break it down for you.
Just don't get caught up in all of the memorization. People want to have a list that they can memorize. But the GMAT is not like that and guess what Business School is not like that and business is not like that either.
You have some principles to guide you - Grammar, parallelism, comparisons, subject-verb agreements, brevity, clarity, specificity, etc. But you have to then be flexible and apply the principles to the questions at hand.
















