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Zorluk: ZorValue vs. Yes/No Data Sufficiency Decision Logic

In GMAT Data Sufficiency, if a statement evaluated in a Yes/No question type yields a definitive 'No' for every possible case satisfying the statement, that statement must be classified as insufficient because the answer to the question stem is negative.

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False
The statement is false because Data Sufficiency logic classifies any statement as sufficient if it yields a single, definitive answer to the question stem. Whether that answer is 'Yes' or 'No' is irrelevant to sufficiency; both provide complete conclusive proof.

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1
Analyze the core rule for sufficiency in Yes/No GMAT Data Sufficiency questions.
A statement is sufficient if it yields a unique binary response (always 'Yes' or always 'No').
Data Sufficiency measures determinacy, not whether the resulting answer is positive or negative.
2
Evaluate the condition where a statement yields a consistent 'No'.
If all valid values under the statement result in 'No', the answer to the stem is conclusively known.
A consistent 'No' leaves no ambiguity regarding the answer to the question.
3
Compare with the claim in the prompt statement.
The claim incorrectly asserts that a negative ('No') answer renders a statement insufficient.
This represents a classic Data Sufficiency misconception; a definitive 'No' is fully sufficient.

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Yes/No Data Sufficiency Decision Logic
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Value vs. Yes/No Data Sufficiency Decision Logic

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