To find the "last digit" of a huge multiplication, simply multiply all the last digits.
324 x 533 x 43564 x 3 x 672.
The answer is "2".
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.
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.
Backup strategy: On the real GMAT, if you feel that you are running very short of time on the Verbal section......you must mark one RC randomly and move on...
-- Use the saved time to perform very well on the remaining questions!
Jack wishes that he was an athlete. : IncorrectJack wishes that he were an athlete. : Correct
A subjunctive mood construction - (wish + plural form of verb)
RCs make or break your GMAT.Practice RCs everyday!
Do not chase "tricks/tips/shortcuts". Chase "concepts"!Do not chase "scores", chase "learning". Scores will follow.
"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.
Schedule your GMAT (only) once you get your target score on 3 consecutive mocks!
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.
"Comparing percentage with absolute numbers"- The fallacy when percentage/proportion is compared with absolute data.
A favorite GMAT CR fallacy.
Example: Jack improved his score by 200%.Inference: Jack performed well. - Incorrect
120
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".
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