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kthor
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Hypothetical DS question scenario - divide by 0 04 Mar 2020, 04:18
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I haven't seen this case, but would there ever be a DS question that involves a statement leading to an undefined answer? If you can conclude that the answer is undefined as a result of that statement, would that statement count as sufficient?

Basic example:
What is the value of x?
Statement 1. \(\frac{5}{0}=x\)

Is statement 1. sufficient because you know the answer is "undefined"?

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J2S2019
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Hypothetical DS question scenario - divide by 0 04 Mar 2020, 05:25
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kthor
I haven't seen this case, but would there ever be a DS question that involves a statement leading to an undefined answer? If you can conclude that the answer is undefined as a result of that statement, would that statement count as sufficient?

Basic example:
What is the value of x?
Statement 1. \(\frac{5}{0}=x\)

Is statement 1. sufficient because you know the answer is "undefined"?
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kthor

You will never spot such scenario in GMAT.
GMAT DS questions will not lead you to examples such as you have shown in the post.

For Yes/No DS questions you will always find statments leading to either YES or NO or Both Cases.
For Value based DS questions you will have statements that will answer in either a single value or multiple possibilities for values of a variable.

If by any chance you have "undefined" scenario to arise in your answer, please follow the Question stem, GMAT you surely provide you by some means any details that will help you to eliminate that choice.

Hope this helps
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Raxit85
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Hypothetical DS question scenario - divide by 0 04 Mar 2020, 05:39
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Any answer, whether DS/PS, which is debatable will not be asked in the REAL GMAT. Any solution with CONFIRMED YES OR NO would be considered as sufficient condition to answer any DS problem.
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Hypothetical DS question scenario - divide by 0 04 Mar 2020, 14:00
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Hello, kthor. I agree with what has been written above. I just wanted to share a little DS advice as a related side-note: be careful not to conflate a "no" answer with a "no" (i.e. NOT SUFFICIENT) response. For instance, if a question were framed, "Is x = 0?" and you were to calculate that x equalled something besides 0, based on the information given--e.g., (1) x < 0--the definitive "no" to the question being asked would mean the statement was SUFFICIENT. I draw attention to this situation because many test-takers miss Yes/No questions by falling into such traps.

Good luck with your studies.

- Andrew

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