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21 Oct 2022, 18:44
Kudos
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Hi All,
Hope you're keeping well. For data sufficiency questions, how to know when to account for unwritten items and when to go with information?
Sample Question below:
The Financial News Daily has 25 reporters covering Asia, 20 covering Europe, and 20 covering North America. Four reporters cover Asia and Europe but not North America, 6 reporters cover Asia and North America but not Europe, and 7 reporters cover Europe and North America but not Asia. How many reporters cover all three continents (Asia, Europe, and North America)?
(1) The Financial News Daily has 38 reporters in total covering at least 1 of the following continents: Asia, Europe, and North America.
(2) There are more Financial News Daily reporters covering only Asia than there are Financial News Daily reporters covering only
So, in this question, I thought Statement 1 will not be sufficient since we don't know if there are any reporters who are NOT in any of the continents (set questions tend to focus on grouping and exclusions). But, here the answer is in fact Statement 1
So, there is my dilemma in DS Questions.
Hope you're keeping well. For data sufficiency questions, how to know when to account for unwritten items and when to go with information?
Sample Question below:
The Financial News Daily has 25 reporters covering Asia, 20 covering Europe, and 20 covering North America. Four reporters cover Asia and Europe but not North America, 6 reporters cover Asia and North America but not Europe, and 7 reporters cover Europe and North America but not Asia. How many reporters cover all three continents (Asia, Europe, and North America)?
(1) The Financial News Daily has 38 reporters in total covering at least 1 of the following continents: Asia, Europe, and North America.
(2) There are more Financial News Daily reporters covering only Asia than there are Financial News Daily reporters covering only
So, in this question, I thought Statement 1 will not be sufficient since we don't know if there are any reporters who are NOT in any of the continents (set questions tend to focus on grouping and exclusions). But, here the answer is in fact Statement 1
So, there is my dilemma in DS Questions.
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21 Oct 2022, 19:08
Kudos
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Hey, if you look closely in Statement 1, you will see that it's mentioned
The Financial News Daily has 38 reporters in total covering at least 1 of the following continents: Asia, Europe, and North America.
This part of the statement tells us that there are NO reporters who are not in any of the continents
Posted from my mobile device
The Financial News Daily has 38 reporters in total covering at least 1 of the following continents: Asia, Europe, and North America.
This part of the statement tells us that there are NO reporters who are not in any of the continents
Posted from my mobile device
21 Oct 2022, 23:06
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Vivek4Dadhich
We should not assume anything in GMAT. Any information that the test makers want us to infer would be stated in the question stem , and this applies both to quant and verbal.
For example, if its given that x is a integer, its is correct to assume that x will not be a fraction or an irrational number. But if its given that x is an number, its incorrect to assume that x is an integer.
With that, to answer your question -
In Statement 1, the statement mentions that
The Financial News Daily has 38 reporters in total covering at least 1 of the following continents: Asia, Europe, and North America
This means among the 38 reporters that Financial News Daily has, there is no reporters who do not cover any of the three continents.
Hence statement 1 is sufficient.
