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".
If it really comes down to "guessing" on the GMAT...
- On SCs, go for the "shortest" choices.- On RCs and CRs, go for the "longest" choices.- On DS, go for "C".
The 3 key subjunctive mood constructions:
1. If + plural form of verb.If I were the Prime Minister, politics would be cleaner.
2. Subject + bossy verb + that + base form of verb.The judge ordered that the cop take the accused away.
3. Subject + bossy verb + that + something be done.The judge ordered that the accused be taken away by the cop.
If it really comes down to "guessing" on the GMAT...
- On SCs, go for the "shortest" choices.- On RCs and CRs, go for the "longest" choices.- On DS, go for "C".
"Confusing-correlation-with-causation"
A favorite GMAT CR fallacy.
Example: Grandma sneezed, so a tornado hit Nebraska.
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.
What is the remainder when (100! + 17) is divided by 7?
100! is a multiple of 7. So, it leaves remainder 0.17 leaves remainder 3 with 7.
So, the answer is 0 + 3 = 3.
Gerund: "verb+ing" acting as noun.
Example: Betting is addictive.
Approach for CR boldface questions:
Step 1: Identify the conclusion.Step 2: Link the bold part(s) with the conclusion.Step 3: Know what to expect from the correct answer choice.Step 4: Eliminate four choices.
The mind-map-strategy for RCs
1.Skim through the first paragraph.Take your eyes off the screen.
2. Ask yourself the paragraph's "purpose" .Purpose is always very, very brief.Avoid paraphrasing the details.
3. Skim through the next paragraph.Take your eyes off.Ask yourself the paragraph's "purpose".Link the purpose of the first paragraph with that of the second.
4. Keep repeating Step 3 for all the subsequent paragraphs.
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.
Angle from a chord at the centre is twice that at the circumference.
120
Scientists postulate that the magic particle exists. : IncorrectScientists postulate that the magic particle exist. : Correct
A subjunctive mood construction - (subject + bossy verb + that + base form of verb)
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