Must be false

(MBF)

Stems that ask which answer choice "must be false," or "could be true, EXCEPT."

Avg. 0.1 per section

“If the statements above are true, which one of the following CANNOT be true?”

0%
2%
27%
51%
20%

Avg. difficulty: 3.9

Correct answer criteria

  • 100% contradicted by the information in the stimulus. The correct answer should not require any assumptions in order to be disproven by the stimulus.

Key tactics

  • Take statements in the stimulus as true
  • There is no need to identify conclusions and premises
  • If there are any statements that can be connected to each other, try to connect them
  • Anticipate counterexamples to conditional claims

Answer choice tips

  • Remember you are NOT in a MBT question. You can often expect at least one trap answer that must be true
  • Answers introducing concepts not discussed in the stimulus are highly unlikely to be correct

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Logical reasoning question types

Argument part Evaluate Fill in the blank Flaw or descriptive weakening Inference Main conclusion or main point Method of reasoning or descriptive Most strongly supported Must be false Must be true Necessary assumption Parallel flawed method of reasoning Parallel method of reasoning Point at issue: agree Point at issue: disagree Principle PSA - find or complete the application PSA - find the rule Resolve reconcile or explain Strengthen Sufficient assumption Weaken

Reading comprehension question types

Analogy (RC) Application Author’s attitude Author’s perspective Describe approach Describe organization Describe relationship Implied Logical continuation Main point Meaning in context (of word, phrase, or idea) Other’s perspective Principle or generalization Purpose in context (of word, phrase, or idea) Purpose of paragraph Purpose of passage Stated Structure WSE (RC)

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