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Hi Bunuel can you pls check why only use euro and 17% is showing as incorrect? ~ seems like the answer on the backend is incorrect for this question as has been highlighted by other users as well. And if this is indeed incorrect, can you pls post an explanation of the correct answer?
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Hi Bunuel can you pls check why only use euro and 17% is showing as incorrect? ~ seems like the answer on the backend is incorrect for this question as has been highlighted by other users as well. And if this is indeed incorrect, can you pls post an explanation of the correct answer?
The correct answer is only use the euro and 17 percent.
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How would I know ,if i should divide 6 by 36 or the whole set of 44 .
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Hi kaustubhkohli12,

Good news - your two selections are correct. "Only use the euro" and 17% is exactly the most accurate completed statement.

Here's why it holds, building on what SM15 already laid out in the thread:

- The sentence starts with "considering only the set of nations with a population over 500,000" - so you work with the circles only and ignore every dot (the under-500k nations). That gives you 36 circle-nations as your base.
- The region you want is the part of the euro circle that does not overlap NATO - the nations that only use the euro. There are 6 of them.
- So the fraction is 6 / 36 = 0.1666... ≈ 17%.

The key thing you got right is the base: you divided by 36 (all circle-nations), not by 44 (which would have wrongly pulled in the small dot-nations). That's the trap on this kind of question - using the whole picture instead of the restricted set the sentence names.

It's also worth seeing why the other dropdown pairings don't work: the "only in NATO" and "in NATO and use the euro" regions give counts that don't round cleanly to any of 13 / 17 / 20 over a base of 36, so "only use the euro" is the one option that lands on an offered percentage. That's what makes it the most accurate statement.

So you can log this one as correct - your reading of the regions and your choice of base were both spot on.

Answer: only use the euro / 17


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nightwalkeuv
How would I know ,if i should divide 6 by 36 or the whole set of 44 .


Because the sentence says “Considering only the set of nations with a population over 500,000.”

That means our entire group is only the large-circle nations, so the denominator is 36, not 44.

The 6 nations that only use the euro are therefore compared with those 36:

6/36 ≈ 17%.

The 44 would be used only if the question were asking about all nations shown in the diagram.
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