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In DS, beware of "exceptions".
Q. Is X positive?
(1) |X| = X.
Because of the exception "X = 0" case, this statement is insufficient.
"whether" generally wins over "if" on GMAT SC.
I am not sure whether it will rain today. : Correct
I am not sure if it will rain today. : Incorrect
On the real GMAT, every question is important.First few questions on a section are a bit more important.
In DS, an answer is achieved only when the answer is "consistent".
Q. Is X a multiple of 24?
(1) X is a multiple of 6.
(2) X is a multiple of 4.
X = 24 satisfies both (1) and (2), leads to "Yes".
X = 12 satisfies both (1) and (2), leads to "No".
"Inconsistent". Hence, insufficient. Answer is E.
"Circular Reasoning"
- The fallacy of assuming a conclusion to be true, in reaching the conclusion.
A favorite GMAT CR fallacy.
Example: Jack cannot lie because Jack always tells the truth.
Example: A is true because B is true; B is true because A is true.
Do not chase "tricks/tips/shortcuts". Chase "concepts"!
Do not chase "scores", chase "learning". Scores will follow.
60% of the learning comes from analyzing mistakes!
RCs make or break your GMAT.Practice RCs everyday!
"Confusing-cause-with-effect"
A favorite GMAT CR fallacy.
Example: Every time I dream, I sleep.
Schedule your GMAT (only) once you get your target score on 3 consecutive mocks!
1-week gap in prep hurts your progress by 3-weeks.
In DS, "no" can very well be an answer.
Question: Is X = 7?
(1): X is not a prime number.
(1) is sufficient. Because (1) leads to "No, X is not equal to 7".
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You can score the 99th percentile despite getting 20% questions incorrect.Don't get stuck on any one question!
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