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12 Jun 2021, 23:35
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What is the difference between "option C" and "option E" in data sufficiency problems?
13 Jun 2021, 02:23
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activepanda
The data sufficiency problem consists of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements, plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of the word counterclockwise), you must indicate whether—
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
C. BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.
D. EACH statement ALONE is sufficient to answer the question asked.
E. Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.
Strategies and Tactics for DS Section
- GMAT Tip of the Week: The Data Sufficiency Reward System
GMAT Tip of the Week: The Heart of Data Sufficiency
GMAT Tip of The Week: Tonya Harding Teaches Data Sufficiency
C-Trap Questions
Veritas Prep blog on C-Trap.
Manhattan GMAT blog on C-Trap.
Another Manhattan GMAT blog on C-Trap.
Warning: Don't Fall Into the C Trap on Data Sufficiency Questions
Easy (A)/(B) Trap in Data Sufficiency Questions on the GMAT
How to Breakdown Data Sufficiency Sequence Questions on the GMAT
How to Make Abstract Data Sufficiency Questions More Concrete
Math Knowledge is Often Insufficient on Data Sufficiency
Why You Should Do the Math on Data Sufficiency GMAT Questions
GMAT Tip of the Week: No Resolution!
GMAT Tip of the Week: LeBron James Says Don't Be Cavalier About Your Initial Data Sufficiency Decision
Data Sufficiency: Why Are you Here?
GMAT Tip of the Week: Kanye West Teaches You How To Live The Data Sufficiency Good Life
When Do You Have Enough Information on Data Sufficiency GMAT Questions?
For more check Ultimate GMAT Quantitative Megathread
I also suggest you to go through the following post ALL YOU NEED FOR QUANT.
Hope this helps.
avigutman
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GMAT 1: 780 Q51 V45
GMAT 2: 780 Q50 V47
GMAT 3: 770 Q50 V45
Expert reply
13 Jun 2021, 03:10
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activepanda
Options C and E agree that neither statement is sufficient on its own to answer the question.
For example:
Is Avi in Canada?
(1) Avi isn't in the USA
(2) Avi isn't in the UK
Where options C and E differ is on whether combining the statements enables you to answer the question. In the above example, it doesn't, so the answer would be E.
Is Avi in his 40s?
(1) Avi has already turned 40.
(2) Avi hasn't turned 50 yet.
Here, too, neither statement alone is sufficient to answer the question, but this time combining them does enable you to answer the question, so the answer is C.
