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Arithmetic_Numberline.png [ 26.9 KiB | Viewed 4757 times ]

FAQ: Why is Statement I not correct?

The key phrasing in this questions is "which of the following statements MUST be true." Must be true means that the statement can never be false.

If x = -9 and y = 1, then statement 1 would be false. Since we have numbers that can make statement 1 false, it does not satisfy the "MUST be true" condition.

FAQ: I thought that the bars around the x and y on answer choice I meant absolute value? As in the number of places from the number line?

Those bars most certainly do mean absolute value; however, it's important to realize that you perform the operation inside the brackets before you take the absolute value. I'll give some possibilities for x and y:

On Test Day, Roman Numeral questions are not too common (you'll probably see just 1 in the Quant section). Sometimes they can be rather complex, but the answer choices tend to be written in such a way so that you can avoid doing some of the work. In this prompt, it looks like everyone was able to quickly prove that Roman Numerals 1 and 2 are NOT always true. After doing that work, you can eliminate 4 of the answers. The one that's left MUST be the correct one.....and you don't even have to deal with Roman Numeral 3 to prove it. Be on the lookout for these types of 'design' shortcuts - the GMAT writers put them into certain questions on purpose.

Re: If x and y are numbers on the number line above, which of the followin [#permalink]

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27 Nov 2017, 13:01

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