It is currently 14 Dec 2019, 16:30

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# X,Y, and Z are negative integers

Author Message
TAGS:
Founder
Joined: 18 Apr 2015
Posts: 9036
Followers: 180

Kudos [?]: 2143 [0], given: 8371

X,Y, and Z are negative integers [#permalink]  27 Dec 2016, 08:26
Expert's post
00:00

Question Stats:

72% (00:29) correct 27% (00:47) wrong based on 66 sessions
X,Y, and Z are negative integers.

 Quantity A Quantity B The product of x,y, and z The sum of x,y, and z

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

_________________

Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos
GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests.

GRE Instructor
Joined: 10 Apr 2015
Posts: 2632
Followers: 96

Kudos [?]: 2850 [1] , given: 45

Re: X,Y, and Z are negative integers [#permalink]  27 Dec 2016, 10:08
1
KUDOS
Expert's post
Carcass wrote:
X,Y, and Z are negative integers.

 Quantity A Quantity B The product of x,y, and z The sum of x,y, and z

We aren't told anything about x, y and z other than the fact that they're all negative integers.
So, let's test some values of x, y, and z

Try x = -1, y = -1 and z = -1
We get:
Quantity A: (-1)(-1)(-1) = -1
Quantity B: (-1) + (-1) + (-1) = -3
In this case, QUANTITY A is greater

Now try x = -1, y = -2 and z = -3
We get:
Quantity A: (-1)(-2)(-3) = -6
Quantity B: (-1) + (-2) + (-3) = -6
In this case, QUANTITY A and QUANTITY B are equal

_________________

Brent Hanneson – Creator of greenlighttestprep.com

GRE Forum Moderator
Joined: 21 Sep 2019
Posts: 89
Followers: 0

Kudos [?]: 53 [1] , given: 2

Re: X,Y, and Z are negative integers [#permalink]  01 Dec 2019, 02:03
1
KUDOS
In these kinds of question. The approach that can be handy is as below.

Try to substitute some values, which sometimes makes A as large and sometimes B as large.

scenario 1 : x= -0.5, y= -1, z= -2
A = -1, B = -3.5
A is greater

Scenario 2 : x = -2, y= -2, z = -2
A = -8, B= -6
B is greater

We do not have definite answer whether A is greater or B is greater. Hence, D is the Answer.
Intern
Joined: 26 Nov 2019
Posts: 23
Followers: 0

Kudos [?]: 22 [1] , given: 0

Re: X,Y, and Z are negative integers [#permalink]  01 Dec 2019, 20:32
1
KUDOS
This can be quickly solved by giving values to the variables. SO plug-in.
Case 1: x= -1, y= -1, z= -1
A: -1 B: -3
A>B

Case 2: x= -2, y= -2, z= -2
A: -8 B: -6
A<B

So 'D' choice can be chosen as we can't come to conclusion with the given information.
Re: X,Y, and Z are negative integers   [#permalink] 01 Dec 2019, 20:32
Display posts from previous: Sort by