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Is |x|/x equals to 1?

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Math Revolution GMAT Instructor
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Is |x|/x equals to 1?  [#permalink]

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New post 29 Apr 2016, 20:17
00:00
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  5% (low)

Question Stats:

83% (00:36) correct 17% (00:33) wrong based on 91 sessions

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Is |x|/x equals to 1?

1) x>0
2) x<1


* A solution will be posted in two days.

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Re: Is |x|/x equals to 1?  [#permalink]

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New post 29 Apr 2016, 20:32
1
St1: x is positive --> +ve/+ve = +ve --> Sufficient

St2: x may be positive or negative --> +ve/+ve = +ve; +ve/-ve = -ve --> Not Sufficient

Answer: A
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Re: Is |x|/x equals to 1?  [#permalink]

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New post 04 May 2016, 07:23
If we modify the original condition, we can write |x|/x=1? as |x|=x?. Hence, the question becomes x>0?. Thus, the correct answer is A.

- Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
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Re: Is |x|/x equals to 1?  [#permalink]

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New post 06 Mar 2018, 05:30
MathRevolution wrote:
Is |x|/x equals to 1?

1) x>0
2) x<1


* A solution will be posted in two days.


Question : Is |x|/x equals to 1.

or Is |x| = x, which is possible when x > 0, so we need to find out whether x > 0 or not.

St 1: x > 0 (Sufficient)

St 2: x < 1

Take x = 0.5, then Is |0.5|/0.5 = 0.5/0.5 = 1

But if x = -1, then 1/-1 not equal to 1

Therefore, Not sufficient

(A)
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Re: Is |x|/x equals to 1? &nbs [#permalink] 06 Mar 2018, 05:30
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