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Data Sufficiency

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POSTS
Last post
XY Plane Problem OG 12 75
by EMAN »
In the xy-plane, the line with equation ax + by + c = 0, where abc is...
2
Last post by EMAN
Sun Oct 04, 2009 6:22 pm
Parallelogram
by crackgmat007 »
If the area of a parallelogram is 100, what is the perimeter of the...
10
Last post by umaa
Sun Oct 04, 2009 5:16 pm
Another inequality
by heshamelaziry »
If x is negative, is x < -3 ? 1- x^2 > 9 2- x^3 < -9
3
Last post by mehravikas
Sun Oct 04, 2009 4:14 pm
work question
by jamesk486 »
Machine X and Y produced identical bottles at different constant...
5
Last post by mehravikas
Sun Oct 04, 2009 3:24 pm
DS - remainder : Value r
by Xbond »
Hi there, Could you help me to resolve this PS and explain the step...
0
Last post by Xbond
Sun Oct 04, 2009 8:01 am
DS - even & odd : x even integer ?
by Xbond »
Hi there, Could you help me to resolve this PS and explain the step...
0
Last post by Xbond
Sun Oct 04, 2009 7:47 am
DS - even & odd
by Xbond »
Hi there, Could you help me to resolve this PS and explain the step...
0
Last post by Xbond
Sun Oct 04, 2009 7:40 am
DS - factor - commun factor greater than 1
by Xbond »
Hi there, Could you help me to resolve this PS and explain the step...
0
Last post by Xbond
Sun Oct 04, 2009 7:38 am
77 algebra ds
by ern5231 »
5X+3Y = ? 1)X/0.3 + Y/0.5 = 1/8 2)X/0.5 + Y/0.3 = 1/8 I don't have...
1
Last post by umaa
Sun Oct 04, 2009 7:02 am
xy-coordinate plane
by uptowngirl92 »
If lines k and j are in the xy-coordinate plane, is the slope...
3
Last post by uptowngirl92
Sun Oct 04, 2009 1:30 am
gmatprep
by mariah »
During a one day sale, a store sold each sweater of a certain type...
2
Last post by mariah
Sun Oct 04, 2009 12:20 am
Equation of the line
by crackgmat007 »
What is the equation of the line that is perpendicular to line y=2x...
4
Last post by schumi_gmat
Sat Oct 03, 2009 10:05 pm
Easy maths problem help
by GMAT? »
At a picnic, each guest is served either a single or a double scoop...
8
EXPERT REPLIES
Last post by money9111
Sat Oct 03, 2009 7:32 pm
Rhombus
by crackgmat007 »
Is quadrilateral ABCD a rhombus? 1. AC is perpendicular to BD 2. AB +...
3
Last post by m&m
Sat Oct 03, 2009 10:05 am
Roots
by crackgmat007 »
How many roots does this equation have? A*X+A=B A does not equal 0 B...
1
EXPERT REPLIES
Last post by Brent@GMATPrepNow
Sat Oct 03, 2009 7:08 am
Help on Rectangular Solid Problem
by EMAN »
OG 122 What is the volume of a certain rectangular solid? (1) Two...
1
EXPERT REPLIES
Last post by Brent@GMATPrepNow
Sat Oct 03, 2009 6:56 am
Standard Deviation Question Two!
by Thatcher »
The Princeton Review 1,012 GMAT Practice Questions Standard Deviation...
1
EXPERT REPLIES
Last post by Ian Stewart
Sat Oct 03, 2009 3:56 am
Standard Deviation Question!
by Thatcher »
Princeton Review 1,012 GMAT Practice Questions Standard Deviation...
1
EXPERT REPLIES
Last post by Ian Stewart
Sat Oct 03, 2009 3:38 am
inequalities
by marie »
as part of a ds problem I had to resolve: x^2 > 2x i.e., {x...
4
Last post by Stuart@KaplanGMAT
Fri Oct 02, 2009 7:13 pm
Solved a DS prob & GMAT testsoftware says it can't be do
by chinamanjoe »
Hi there! I was practising DS problems today, using the official GMAT...
2
Last post by chinamanjoe
Thu Oct 01, 2009 9:27 pm
DS - Word Problem
by willshu »
The following question is from a Kaplan CAT. I do not agree with the...
2
Last post by willshu
Thu Oct 01, 2009 3:41 pm
a and b ^-1
by dikku07 »
If a and b are positive, is (a^-1 + b^-1)^-1 less than (a^-1b^-1)^-1?...
8
Last post by vaibhav.iit2002
Thu Oct 01, 2009 8:57 am
What is the area of the triangle ?
by goelmohit2002 »
The below figure shows a right triangle in xy plane. If coordinate of...
15
EXPERT REPLIES
Last post by goelmohit2002
Thu Oct 01, 2009 4:46 am
Geometry Problem
by vivekjaiswal »
What is the circumference of the circle above? (see attachment) (1)...
7
Last post by vivekjaiswal
Wed Sep 30, 2009 8:49 pm
Coordinate Geometry OG 121 DS
by EMAN »
Someone please help me understand this one below and the strategy you...
1
Last post by EMAN
Wed Sep 30, 2009 7:24 pm
DS Question
by Bruin05 »
If p is a positive integer, what is the value of p? (1) p/4 is a...
2
Last post by Bruin05
Wed Sep 30, 2009 12:17 pm
Remainder Problem
by Onigbogi Tosin »
If n and m are positive integers, what is the remainder when 3^(4n+2)...
9
Last post by Stuart@KaplanGMAT
Wed Sep 30, 2009 12:14 pm
DS Gmat prep 2 question Inqualities
by under_net »
Initially got D but ended up marking E. Please explain OA A
1
Last post by xcusemeplz2009
Wed Sep 30, 2009 10:39 am
Algebra
by treker »
Is sqrt((x-3)^2) = 3-x ? (1) x ≠ 3 (2) -x | x | > 0
2
Last post by vaibhav.iit2002
Wed Sep 30, 2009 7:39 am
Bus
by crackgmat007 »
To arrive at its destination on time, a bus should have maintained a...
1
Last post by vaibhav.iit2002
Wed Sep 30, 2009 7:15 am
DS Probability
by kguo »
When a player in a certain game tossed a coin a number of times, 4...
2
Last post by vaibhav.iit2002
Wed Sep 30, 2009 7:04 am
freshmen or a senior
by uptowngirl92 »
There are 42 students in a group. If each student is either a...
7
Last post by crackgmat007
Tue Sep 29, 2009 8:43 pm
Is w > 0?
by Gmat09_5ALL »
If w and c are integers, is w > 0? (1) w + c > 50 (2) c > 48
3
Last post by Gmat09_5ALL
Tue Sep 29, 2009 11:54 am
DS: area of rectangle and Square
by rsruparelia »
Which of the two has larger area - the rectangle or square? 1). the...
1
Last post by vaibhav.iit2002
Tue Sep 29, 2009 10:15 am
OG 11 porblem 119
by ershovici »
Is 2x-3y < x sqr 1) 2x - 3y = -2 2) x>2 and y>0 IMO answer...
2
Last post by sanjana
Tue Sep 29, 2009 8:39 am
hard question,
by tanviet »
a contruction company was paid a total of 500,000 usd for a...
2
Last post by gnet
Tue Sep 29, 2009 6:52 am
Algebra
by arbiter »
if mv<pv<0 , is v>0? 1> m<p 2> m<0 OA is D
2
Last post by tanviet
Tue Sep 29, 2009 6:17 am
x and y - even
by gmatv09 »
If x and y are integers, is the value of x(y+1) even? (1) x and y are...
1
Last post by sanjana
Tue Sep 29, 2009 3:33 am
value of n
by uptowngirl92 »
What is the value of n? (1) j = -4 (2) j = -k
1
Last post by mohitsharda
Tue Sep 29, 2009 2:10 am
General Strategy Question
by kguo »
I have finished about 70% of the data sufficiency questions on OG 12...
0
Last post by kguo
Mon Sep 28, 2009 10:43 pm
value of x?
by uptowngirl92 »
What is the value of x? (1) root(x^4)= 9 (2) root(x^2)= -x How is the...
7
Last post by crackgmat007
Mon Sep 28, 2009 8:38 pm
Alba to Benton
by arbiter »
On his trip from Alba to Benton, Julia drove the first x miles at an...
1
Last post by JeffB
Mon Sep 28, 2009 2:36 pm
GMATPrep DS Question
by mpaudena »
Is the hundredths digit of decimal d greater than 5? (1) The tenths...
1
Last post by JeffB
Mon Sep 28, 2009 2:15 pm
DS: Speed of Train
by rsruparelia »
What is the speed of the train? 1). The train crosses a tree in 13...
1
Last post by takegmat2010
Sun Sep 27, 2009 5:05 pm
Exponents+ absolutes
by Morgoth »
a and b are integers and a is not equal to b Is lal*b > 0 ?...
3
Last post by Morgoth
Sun Sep 27, 2009 11:34 am
Question about problem 89 from OG 11 (page 285)
by gmattic »
This question asks if the following equation is valid: k _ (l + m) =...
4
EXPERT REPLIES
Last post by gmattic
Sat Sep 26, 2009 10:22 pm
In a certain daycare, are there more boys than girls?
by hansoo »
In a certain daycare, are there more boys than girls? (1) The number...
2
Last post by hansoo
Sat Sep 26, 2009 4:18 pm
light bulbs-probability
by dikku07 »
A box contains 10 light bulbs, fewer than half of which are...
8
Last post by grockit_jake
Sat Sep 26, 2009 2:54 pm
If zt < -3, is z < 4 ?
by mbadreams »
If zt < -3, is z < 4 ? (1) z < 9 (2) t < -4 I don't know...
1
Last post by takegmat2010
Sat Sep 26, 2009 12:40 pm
If y > or = 0, what is x?--TOUGH GMAT prep question
by MBA2010HereWeGo »
If y > or = 0, what is x? 1) The absolute value of X-3 is > or...
1
Last post by rsruparelia
Sat Sep 26, 2009 9:32 am