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In DS, when you are able to solve "too easily", you are probably missing a trap.
Q. Which integer is the highest common factor of four positive integers A, B, C, and D?
(1) A= 27, B=49.
Unlike what many students will think, this statement is "Sufficient". Because no matter what "C" and "D" are, if HCF of "A" and "B" is 1, the answer is going to be "1".
Indefinite pronouns are singular. Examples: everybody, someone, anyone, anybody, somebody, anything, whatsoever, whoever, whomsoever, something, no one, nothing etc
Mocks are not just for testing preparedness. They build stamina/temperament/strategy. They keep you in touch with all topics. PRACTICE MOCKS REGULARLY!
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".
On the GMAT, ensure 'completing' each section. - "no attempts" attract greater penalty than "negative attempts" do.
In DS, "combine" the two statements only when each statement fails alone.
Q. If X is an integer, is X a multiple of 12?
(1) Two of the factors of X are 5 and 7.
(2) X is a product of two odd integers.
The answer is not C.
The answer is B.
Trapezium is a quadrilateral with one pair of opposite sides parallel.
Area: ½(sum of parallel sides) x height
If a trapezium's other two sides are also parallel, it becomes a parallelogram.
Area: base x height
You should regularly revisit SC concepts. Make SC Stage-1 videos and GMAT Shots your good friends!
"Confusing-correlation-with-causation"
A favorite GMAT CR fallacy.
Example: Grandma sneezed, so a tornado hit Nebraska.
Practice RCs, everyday! The skill will help you in all sections and question types!!
Don't leave mocks for the end- it's a common mistake. Take a mock every week.
Key difference between "Assumption statements" and "Strengthening statements" on CR:
Assumption statements are a subset of Strengthening statements.
- A strengthening statement fills the missing link.
- An assumption statement fills the missing link and must be true for the argument to hold ground.
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Even x Even = Even
Even x Odd = Even
Odd x Odd = Odd
Even + Even = Even
Even + Odd = Odd
Odd + Odd = Even
Odd + Odd = Even
Even^Even = Even
Even^Odd = Even
Odd^Even = Odd
Odd^Odd = Odd
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