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Math Expert V
Joined: 02 Sep 2009
Posts: 56277
If x is a negative integer and 2 < x^2 < 36, what is the least possibl  [#permalink]

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Difficulty:   15% (low)

Question Stats: 76% (01:12) correct 24% (01:23) wrong based on 283 sessions

### HideShow timer Statistics GMAT CLUB TESTS' FRESH QUESTION:

If x is a negative integer and 2 < x^2 < 36, what is the least possible value of |2x + 11| ?

A. 7
B. 5
C. 3
D. 1
E. 0

_________________
Math Expert V
Joined: 02 Sep 2009
Posts: 56277
Re: If x is a negative integer and 2 < x^2 < 36, what is the least possibl  [#permalink]

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Bunuel wrote:

GMAT CLUB TESTS' FRESH QUESTION:

If x is a negative integer and 2 < x^2 < 36, what is the least possible value of |2x + 11| ?

A. 7
B. 5
C. 3
D. 1
E. 0

OFFICIAL EXPLANATION:

If $$x$$ is a negative integer and $$2 < x^2 < 36$$, what is the least possible value of $$|2x + 11|$$?

A. 7
B. 5
C. 3
D. 1
E. 0

Notice that we are told that $$x$$ is a negative integer. Thus $$x$$ can be -2, -3, -4, or -5. The least value of $$|2x + 11|$$ for those values of $$x$$ is 1, when $$x=-5$$.

If we were not told that $$x$$ is a negative integer, then the least value will obviously be 0, for $$x=-5.5$$.

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##### General Discussion
Manager  S
Joined: 05 Dec 2017
Posts: 53
Location: India
WE: Analyst (Commercial Banking)
Re: If x is a negative integer and 2 < x^2 < 36, what is the least possibl  [#permalink]

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Bunuel wrote:

GMAT CLUB TESTS' FRESH QUESTION:

If x is a negative integer and 2 < x^2 < 36, what is the lest possible value of |2x + 11| ?

A. 7
B. 5
C. 3
D. 1
E. 0

Least possible value of a mod function is 0

Here 0 can be attained by 2x+11 = 0 or x = -5.5, now since x^2 <36, x can't be -6

Hence at x = -5; the value of the function is |-10+11| = 1

Hence D
SVP  V
Joined: 26 Mar 2013
Posts: 2283
Re: If x is a negative integer and 2 < x^2 < 36, what is the least possibl  [#permalink]

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1
Bunuel wrote:

GMAT CLUB TESTS' FRESH QUESTION:

If x is a negative integer and 2 < x^2 < 36, what is the lest possible value of |2x + 11| ?

A. 7
B. 5
C. 3
D. 1
E. 0

$$2 < x^2 < 36$$

X is negative integer, then $$-6 < x <-$$ $$\sqrt{2}$$.........It is nice to know $$\sqrt{2}=1.4$$

Then $$-6 < x <-1.4$$... x could be -5, -4, -3, -2......To make least, we need to take +11 down.......So least negative number -5

|2x + 11| = |2*-5 + 11| = |-10 + 11| = 1

Bunuel

Do you add any fresh GMAT Club tests question to the bank of the questions itself directly? or just post here in the forum?
Intern  B
Joined: 01 Apr 2012
Posts: 16
Re: If x is a negative integer and 2 < x^2 < 36, what is the least possibl  [#permalink]

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Bunuel wrote:

GMAT CLUB TESTS' FRESH QUESTION:

If x is a negative integer and 2 < x^2 < 36, what is the lest possible value of |2x + 11| ?

A. 7
B. 5
C. 3
D. 1
E. 0

Given that x is a negative integer and and 2<x^2<36
so the values the X can take that satisfy this condition are -2, -3, -4,-5 i.e 2< (-2)^2 < 36 ; similarly for others
Substituting the values of -2, -3, -4 and -5 in |2x+11|
The lowest number would be when |2(-5) + 11| = 1
Hence D
Intern  B
Joined: 18 Apr 2017
Posts: 15
Location: Brazil
WE: Corporate Finance (Energy and Utilities)
Re: If x is a negative integer and 2 < x^2 < 36, what is the least possibl  [#permalink]

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So, we are given that x is negative, and that square of x is between 2 and 36. That takes us to some possible values of x, such as -2,-3,-4,-5.
In order to minimize the modulus |2x+11| output, we need to maximize the negative value inside the modulus. That said, the biggest value of x inside the modulus would be -5.

In algebra...
x = -5
|2x+11| =?

|2*(-5)+11| = |-10+11| = 1
Director  P
Joined: 02 Oct 2017
Posts: 727
Re: If x is a negative integer and 2 < x^2 < 36, what is the least possibl  [#permalink]

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2<x^2<36
X can be -2,-3,-4,-5

We need to make |2x+11| as minimum , it's minimum value is zero
For zero x need to be -5.5 which is not possible as his negative integer

Then plugging values of -2,-3,-4,-5

We get minimum value as 1 for x=-5

Posted from my mobile device
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Math Expert V
Joined: 02 Sep 2009
Posts: 56277
Re: If x is a negative integer and 2 < x^2 < 36, what is the least possibl  [#permalink]

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Bunuel wrote:

GMAT CLUB TESTS' FRESH QUESTION:

If x is a negative integer and 2 < x^2 < 36, what is the least possible value of |2x + 11| ?

A. 7
B. 5
C. 3
D. 1
E. 0

_________________ Re: If x is a negative integer and 2 < x^2 < 36, what is the least possibl   [#permalink] 24 Dec 2018, 04:42
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