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.
"Generalization"- The fallacy of making a claim on evidence that is too small.
A favorite GMAT CR fallacy.
Example: At 90, Mr McGill drinks sweetened soda every day and yet, maintains good health. The elderly can, therefore, have sweetened soda every day and, yet, maintain good health.
Do not chase "tricks/tips/shortcuts". Chase "concepts"!Do not chase "scores", chase "learning". Scores will follow.
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.
"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.
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.
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
60% of the learning comes from analyzing mistakes!
"The fallacy of drawing a conclusion based on one entity’s comparison with oneself"
-A favorite GMAT CR fallacy.
Example: Jack improved his score by 200%. Inference: Jack performed well. - Incorrect
Schedule your GMAT (only) once you get your target score on 3 consecutive mocks!
Don't leave mocks for the end- it's a common mistake.Take a mock every week.
Rhombus is a quadrilateral with all sides equal.Area: 1/2 x diagonal 1 x diagonal 2
If angles of a rhombus become equal, a rhombus becomes a square.- And the diagonals become equal.
120
If Jack was a professional athlete, he would be fit. : IncorrectIf Jack were a professional athlete, he would be very fit. : Correct
A subjunctive mood construction - (if + plural form of verb + would be)
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