Irrational: Can’t be presented in p/q form, where p and q are integers. Ex: √3, Pi
Rational: Can be presented in p/q form, where p and q are integers. Ex: 2, 0.45, 3/7, etc.
The trainer commanded the cadet that he performs the drill. : IncorrectThe trainer commanded the cadet that he perform the drill. : Correct
A subjunctive mood construction - (subject + bossy verb + that + base form of verb)
"Assuming that bases are same"- The fallacy when post-event difference in results is attributed to the event. -- Without establishing that the pre-event results were similar.
A favorite GMAT CR fallacy.
Example: Group A was given tonic Xinca. Group B was given a placebo. Post experiment, on the same IQ test, Group A performed significantly better than Group B. Inference: Xinca improves intelligence. - Incorrect
1-week gap in prep hurts your progress by 3-weeks.
Don't leave mocks for the end- it's a common mistake.Take a mock every week.
Percentage change:
[(New Value-Old Value)/ Old Value] x 100
Please note: the denominator has "old value".
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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