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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.
Permutation is used when ‘order’ matters.Example: Arranging children in a row.
Combination is used when ‘order’ does not matter.Example: Selecting teams.
Commas cannot join two independent clauses.Incorrect: Amy sings, she enjoys it.Correct: Amy sings; she enjoys it.Correct: Amy sings, and she enjoys it.
RCs make or break your GMAT.Practice RCs everyday!
Be cautious when you see extreme tonality on a CR question or answer choices.Example: must, most, highest, lowest, worst, best etc
- Often, the key to elimination/selection of an answer choice lies in such extreme terms.
Don't leave mocks for the end- it's a common mistake.Take a mock every week.
From any point on a plane, only two tangents can be drawn on a circle.Length of the two tangent is equal.
Practice RCs, everyday!The skill will help you in all sections and question types!!
Key difference between "Strengthening statements" and "Evaluation statements" on CR:
- A strengthening statement "helps" an argument.
- An evaluation statement may "help" or "hurt" an argument.-- Either way, it leads to an "evaluation" on the argument.
RCs make or break your GMAT.Practice RCs everyday!
While attempting AWA, type the first and the last paragraphs first.
- This will ensure that your essay will look 'complete', even if you run out of time.- This will give you more time to think about the middle paragraphs.
In a group of 100, 80 take tea, and 60 take coffee. How many take both?
Answer: Cannot be determined. Because we don't know how many take "neither".
120
"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.
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