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Data Sufficiency

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POSTS
Last post
169 Easy inequality
by ern5231 »
A<B. Is A<0? (1) 2A>AB (2) B<0 The OA given for this...
11
Last post by Talkativetree
Sat Oct 17, 2009 4:51 pm
hardest DS, help pls
by tanviet »
this com from 15 test sets, a good source Joana bought only 0.15 usd...
13
Last post by Talkativetree
Sat Oct 17, 2009 2:33 pm
Triangle Problem Help
by EMAN »
The hypotenuse of a right triangle is 10 cm. What is the perimeter,...
6
Last post by okigbo
Fri Oct 16, 2009 9:54 pm
Is n an integer?
by treker »
Is n an integer? 1) sqrt(n) > 1 2) sqrt(n) < 2 Please explain...
11
Last post by life is a test
Thu Oct 15, 2009 11:28 pm
Does Z lie between X and Y?
by sanjana »
Distance between x and y is greater than distance between y and...
3
Last post by life is a test
Thu Oct 15, 2009 10:31 pm
MGMAT - confusing explanation
by vkb16 »
If |x|·y+ 9 > 0, and x and y are integers, is x < 6? (1) y...
1
Last post by sanjana
Wed Oct 14, 2009 10:25 pm
GMATPrep Question
by mpaudena »
How much time did it take a certain car to travel 400 kilometers? (1)...
1
Last post by sanjana
Wed Oct 14, 2009 10:16 pm
Perfect Square
by peter.henery12 »
p raised to a, q raised to b, r raised to c, s raised to d = x, where...
0
Last post by peter.henery12
Wed Oct 14, 2009 6:45 pm
GMAC Number Properties
by DCJ »
If x not equal to -y, is (x-y)/(x+y)>1? 1. x>0 2. y<0 Ans: E
0
Last post by DCJ
Wed Oct 14, 2009 5:58 pm
GMAC Number Properties
by DCJ »
Is x^4 + y^4>z^4? (1)x^2 + y^2>z^2 (2)x+y>z Ans: E
1
Last post by DCJ
Wed Oct 14, 2009 5:48 pm
Value of m
by gmatblrind »
What is the value of m? a) 8m^2 = 8^2m b) m is an integer Well...
6
Last post by mehravikas
Wed Oct 14, 2009 2:03 pm
composite integer
by dikku07 »
An integer greater than 1 that is not prime is called composite. If...
12
Last post by Dobrov
Wed Oct 14, 2009 12:51 pm
Please explain these GMAT PREP DS Questions
by DREAM GMAT »
1. If Bob makes 36 or fewer items in a week, he is paid x dollars per...
3
Last post by KapTeacherEli
Wed Oct 14, 2009 12:29 pm
Set S
by crackgmat007 »
If the mean of set S is 20, what is the median of set S ? 1. In set S...
1
Last post by Dobrov
Wed Oct 14, 2009 12:22 pm
11 consecutive integers
by sanjana »
if 11 consecutive integers are listed from least to most,what is the...
1
Last post by JeffB
Wed Oct 14, 2009 8:00 am
Distance between exits #13 DS OG11
by wolfe05 »
This one is from the OG. A certain expressway has exits J, K, L, and...
3
Last post by Nethaji
Tue Oct 13, 2009 9:08 pm
Circle C and line K lie in the xy plane.
by andy123 »
I have a tough time with questions on co-ordinate geometry because I...
4
Last post by Talkativetree
Tue Oct 13, 2009 6:08 pm
Working together
by crackgmat007 »
If working together, brothers Tom and Jack can paint a wall in 4...
5
Last post by crackgmat007
Tue Oct 13, 2009 2:23 pm
How many paintings does Jill own?
by uptowngirl92 »
How many paintings does Jill own? (1) If Jill sells 5 of her...
2
Last post by Dobrov
Tue Oct 13, 2009 1:40 pm
Mode Median
by agganitk »
Set X is composed of the total daily rainfall for a 5 day period.Is...
3
Last post by mehravikas
Tue Oct 13, 2009 11:12 am
160 How many students?
by ern5231 »
A class has 25 individuals - Seniors/Juniors who...
1
Last post by bullzeye
Tue Oct 13, 2009 3:38 am
Gmat Prep
by heshamelaziry »
Please help me with the following problems. My test is on October 26....
2
Last post by sanjana
Tue Oct 13, 2009 1:13 am
111 parabola intersection
by ern5231 »
Q1 y = x ^ 2, px + qy +1 = 0, are two equations in the XY axis. Is...
6
Last post by ern5231
Tue Oct 13, 2009 12:37 am
Geometry
by agganitk »
Quadrilateral ABCD is a rhombus and points C, D, and E are on the...
1
Last post by mehravikas
Mon Oct 12, 2009 5:31 pm
138 v2 Does this have finite decimal?
by ern5231 »
Does 1 / (p * q) have finite decimal sequence to the right of it? (1)...
9
Last post by mehravikas
Mon Oct 12, 2009 4:54 pm
DS Problems Need help!
by kguo »
1. Is the measure of one of the interior angles of quadrilateral ABCD...
4
Last post by mehravikas
Mon Oct 12, 2009 11:38 am
Ratio (Ice Cream Scoops)
by EMAN »
At a certain picnic, each of the guests was served either a single...
1
Last post by mp2437
Mon Oct 12, 2009 11:13 am
average difficult question
by agganitk »
Set X consists of 9 positive elements. Set Y consists of the squares...
0
Last post by agganitk
Mon Oct 12, 2009 7:08 am
Is n a multiple of 15
by sanjana »
Is the integer n a multiple of 15? 1)n is a multiple of 20 2)n+6 is a...
2
Last post by sanjana
Sun Oct 11, 2009 8:11 pm
210 What is the Median?
by ern5231 »
In a group of numbers, the average is 20. What is the median? 1) 50%...
3
EXPERT REPLIES
Last post by Ian Stewart
Sun Oct 11, 2009 8:14 am
72(3) who reaches the ground first
by ern5231 »
AB from both 100m Fall height, B started 10 seconds later than the A,...
2
Last post by nithi_mystics
Sun Oct 11, 2009 8:03 am
85 Pentagon incribed in circle
by ern5231 »
A regular pentagon is inscribed in a circle. Is the perimeter of the...
3
Last post by umaa
Sat Oct 10, 2009 8:37 pm
138 recurring decimal?
by ern5231 »
X=1/pq. Does the value of X contain an infinite recurring decimal?...
6
EXPERT REPLIES
Last post by Brent@GMATPrepNow
Sat Oct 10, 2009 8:03 pm
Inequality Algebric Solution required
by navdeepbajwa »
Can you solve this algebrically If x and y are integers, does x^y *...
3
Last post by nithi_mystics
Sat Oct 10, 2009 4:37 pm
Instructors plz help...Inqeuality DS 32
by ern5231 »
32) Is (a^2) b + a (b^2) > 0 ? (1) a <0 (2) a+b<0
9
Last post by crackgmat007
Fri Oct 09, 2009 6:15 pm
DS - remainders : x divided by 6
by Xbond »
Hi there, Could you help me to resolve this DS and explain the step...
4
Last post by Xbond
Fri Oct 09, 2009 2:03 pm
178 Does straight line have a negative slope?
by ern5231 »
In rectangular coordinate system, a straight line has a point (c,d)...
6
EXPERT REPLIES
Last post by Brent@GMATPrepNow
Fri Oct 09, 2009 10:42 am
DS Inequalities Question from GMAT Prep 2
by DA_11 »
If x-y>10, is x-y>x+y? 1) x = 8 2) y = -20 OA : D I marked A....
1
Last post by srivas
Fri Oct 09, 2009 8:43 am
61 even/odd
by ern5231 »
Is m+n even? 1) m is even 2) n^2-m is even
3
Last post by ern5231
Thu Oct 08, 2009 8:22 pm
63 find the percentage increase in the number of people
by ern5231 »
If M men and W women worked last year. What is the percentage of...
1
Last post by ern5231
Thu Oct 08, 2009 7:45 pm
180) Calculate distance
by ern5231 »
The cost of delivery of certain items is as follows : If the distance...
2
Last post by mehravikas
Thu Oct 08, 2009 7:35 pm
4) geometry problem
by ern5231 »
A rectangular lawn of length L and width W is surrounded by a path of...
3
Last post by ern5231
Thu Oct 08, 2009 7:25 pm
Need help understanding what the problem is asking for
by virtuoso902 »
Hey everyone. I Don't completely understand what this question is...
1
Last post by JeffB
Thu Oct 08, 2009 2:34 pm
Please provide answers
by Sanket05 »
In a demographic study, the population and total income of a certain...
2
Last post by JeffB
Thu Oct 08, 2009 2:16 pm
Range of a set
by uptowngirl92 »
Is the range of a non-empty set S bigger than its mean? a) All...
4
Last post by meticulousboy
Thu Oct 08, 2009 7:22 am
help me with these questions
by kimmie2k »
1) if a>b>c>0, c=3? 1. 1/c > 1/3 2. 1/a + 1/b + 1/c = 1...
3
Last post by kimmie2k
Wed Oct 07, 2009 10:24 pm
176 another inequalities with ds
by ern5231 »
Is a^2-ab<0? 1) b<0 2)ab<0 The OA given is E but I feel it...
1
Last post by sunnyjohn
Wed Oct 07, 2009 6:25 pm
Modulus question.
by uptowngirl92 »
Is modulus(x-1) <1 ? (1) (x-1)^2<=1 (2) x^2-1>0
5
Last post by mehravikas
Wed Oct 07, 2009 2:39 pm
176 Inequalities DS
by ern5231 »
a^2-ab<0 1)b<0 2)a-b<0
2
Last post by NikolayZ
Wed Oct 07, 2009 12:06 pm
131 pentagon in circle
by ern5231 »
A regular pentagon is within a circle. Is the perimeter of pentagon...
4
Last post by xcusemeplz2009
Wed Oct 07, 2009 11:49 am