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Data Sufficiency

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POSTS
Last post
Interesting GMATFix Problem-48
by arora007 »
If x is greater than 0, is root(-2xy + x^2 + y^2) > y-x ? 1) -y|y|...
6
Last post by ksundar
Thu Oct 14, 2010 6:34 pm
Integers
by danjuma »
If n is an integer between 10 and 99, is n < 80? a.The sum of the...
2
Last post by ksundar
Thu Oct 14, 2010 6:20 pm
Factors, number properties
by hitmis »
Source : grockit. If k is an integer > 1, does k=2? (1) if a and b...
3
Last post by Testluv
Thu Oct 14, 2010 12:09 am
DS question
by frank1 »
Is x = y ? (1) x/y = 3 (2) x = 3y Source:Nova Data Prep OA later
10
Last post by frank1
Wed Oct 13, 2010 10:09 pm
number property
by mrinal2100 »
The product of positive integers m and n is 36. What is the value of...
3
Last post by Viktri
Wed Oct 13, 2010 10:06 pm
can you please explain this?
by j5makk »
Each of the following equations has at least one solution EXCEPT...
4
Last post by Viktri
Wed Oct 13, 2010 9:57 pm
X and Y
by goyalsau »
If X and Y are positive, is X/Y+Y/X>2? 1. X does not equal Y 2. X...
1
Last post by Viktri
Wed Oct 13, 2010 9:44 pm
Missiles
by goyalsau »
Two missiles are launched simultaneously. Missile 1 launches at a...
3
Last post by goyalsau
Wed Oct 13, 2010 9:39 pm
Interesting GMATFix Problem-49
by arora007 »
p-q>0 , is (q-p)/(r+q) > (-p)/r ? 1)r<0 2)q<0
5
Last post by Viktri
Wed Oct 13, 2010 9:22 pm
DS problem 169 - Quant review 2nd Edition (Need Help)
by kkrish »
Hey guys, I have been trying to decipher Prob 169 from the 2nd ED...
3
Last post by goyalsau
Wed Oct 13, 2010 9:11 pm
Absolute Value
by lokesh r »
Is mod x = y - z 1) x + y = z 2) x < 0 OA.. C Corrrect me if i am...
4
Last post by lokesh r
Wed Oct 13, 2010 11:18 am
Question about DS answers
by val1e »
Here's my issue: Let's take, for example, the following problem If m...
3
EXPERT REPLIES
Last post by Ian Stewart
Wed Oct 13, 2010 10:21 am
inequalities.
by goyalsau »
Totally confused.
8
Last post by fskilnik@GMATH
Wed Oct 13, 2010 10:08 am
DS question on Permutation
by ptm_30 »
In how many ways can n different balls be arranged in r slots? (1)...
3
Last post by shovan85
Wed Oct 13, 2010 12:40 am
If x and y are positive, is 3x > 7y?
by mitzwillrockgmat »
If x and y are positive, is 3x > 7y? (1) x > y + 4 (2) -5x <...
5
Last post by GShahin
Tue Oct 12, 2010 9:43 pm
ABSOLUTE AVERAGE,MGMAT
by rb90 »
What is the average of x and |y| ? (1) x + y = 20 (2) |x + y| = 20...
3
Last post by rb90
Tue Oct 12, 2010 12:42 pm
Integers
by danjuma »
Is the integer n a multiple of 15? a. n is a multiple of20 b. n+6 is...
2
Last post by fskilnik@GMATH
Tue Oct 12, 2010 11:54 am
Probability and decimal
by Veronica »
Each of the 25 balls in a certain box is either read, blue, or white...
3
Last post by fskilnik@GMATH
Tue Oct 12, 2010 10:55 am
OG 12th edition - Data Sufficiency question #161
by bynddrvn »
I don't understand how to simplify this question. 161. Beginning in...
2
Last post by bynddrvn
Mon Oct 11, 2010 2:08 pm
hundredths digit of k
by gmatdriller »
What is the hundredth digit of a three-digit number k? (1) the...
4
Last post by gmatdriller
Mon Oct 11, 2010 12:24 pm
GMAT Prep DS
by lokesh r »
In the xy-plane, at what point does the graph of y=(x+a)(x+b)...
2
EXPERT REPLIES
Last post by lokesh r
Mon Oct 11, 2010 11:15 am
remainders
by joannabanana »
If p and n are positive integers and p>n, what is the remainder...
3
Last post by GMATMadeEasy
Mon Oct 11, 2010 11:07 am
Kaplan Problem
by reply2spg »
If it rains during a guest's stay at holiday resort X, the management...
7
Last post by diebeatsthegmat
Mon Oct 11, 2010 7:19 am
Ratios ds
by joannabanana »
Five years ago at laboratory B, the ratio of doctorate to...
4
Last post by fskilnik@GMATH
Mon Oct 11, 2010 4:40 am
Prime Factors
by danjuma »
If the prime numbers p and t are the only prime factors of th integer...
5
Last post by shovan85
Sun Oct 10, 2010 12:09 pm
GMATprep problem
by princessss »
If x is positive number less than 10, is z greater than average of x...
3
Last post by princessss
Sun Oct 10, 2010 10:42 am
DS
by danjuma »
In a certain senior class, 72% of the male and 80% of the female...
1
Last post by selango
Sun Oct 10, 2010 9:28 am
DS
by danjuma »
Whenever Martin has a restaurant bill with an amount b/w $10 &...
1
Last post by selango
Sun Oct 10, 2010 9:23 am
DS
by danjuma »
A certain car dealership agreed to donate x dollars to a red cross...
2
Last post by clock60
Sun Oct 10, 2010 9:22 am
DS
by danjuma »
Are the integers Z and F to the right of 0 on the numberline? 1. The...
3
Last post by clock60
Sun Oct 10, 2010 9:13 am
Round Off
by shovan85 »
In the number 1.4ab5, a and b represent single positive digits. If x...
2
Last post by diebeatsthegmat
Sat Oct 09, 2010 6:57 pm
Interesting GMATFix Problem-47
by arora007 »
m and n are positive integers and the quotient of m and 5 is the...
5
Last post by neerajkumar1_1
Sat Oct 09, 2010 6:46 pm
Interesting GMATFix Problem-50
by arora007 »
N is a set of 4 consequtive even integers whose sum is positive, O is...
3
Last post by arora007
Sat Oct 09, 2010 11:13 am
GMATprep1 coordinate geometry
by rb90 »
Please explain the working of this sum.Really need the help.Thnks.The...
2
Last post by rb90
Sat Oct 09, 2010 4:15 am
Triangles.
by goyalsau »
HI! Guys, Can you please explain Which property of triangles is used...
2
Last post by goyalsau
Sat Oct 09, 2010 2:03 am
Coordinate Geometry
by deepak123gmat »
Circle C and line K lie in the XY-plane. If circle C is centered at...
3
Last post by Yanat
Sat Oct 09, 2010 12:31 am
Modulus-quick one
by selango »
What is the value of |x| ? (1) x = |x| (2) x^2 = 9 Source: grockit
6
Last post by Yanat
Sat Oct 09, 2010 12:25 am
Ratio and Percent problem
by selango »
Company Q has 18,000 employees, 40 percent of whom are married. What...
5
Last post by Yanat
Sat Oct 09, 2010 12:24 am
DS: Absolute signs
by alwaysabhi »
Hi friends, How 2 solve it ? If x < p < q < y, is lq - xl...
6
Last post by deepak123gmat
Fri Oct 08, 2010 11:30 pm
knewton vr 17
by pradeepkaushal9518 »
Bawss Medical Supply Store sells Brand X rubbing alcohol and Brand Y...
6
Last post by diebeatsthegmat
Fri Oct 08, 2010 10:23 pm
knewton vr-18
by pradeepkaushal9518 »
If Julio had a dentist's appointment on a certain day, was the...
3
Last post by Testluv
Fri Oct 08, 2010 8:27 pm
Probability
by danjuma »
If events A and B are independent, is the probability of both events...
4
Last post by diebeatsthegmat
Fri Oct 08, 2010 2:27 pm
Mean and standard deviation
by deepak123gmat »
The lifetime of all the batteries produced by a certain company in a...
3
Last post by deepak123gmat
Fri Oct 08, 2010 11:43 am
Platinum GMAT: Qn
by anantbhatia »
If x and y are distinct positive integers, what is the value of x^4 -...
5
EXPERT REPLIES
Last post by anantbhatia
Fri Oct 08, 2010 11:17 am
Terminating Decimal
by selango »
A terminating decimal is defined as a decimal that has a finite...
3
Last post by gmatmachoman
Fri Oct 08, 2010 10:49 am
Factor
by goyalsau »
Is 300 a factor of Q? (1) 250 is a multiple of Q. (2) 250 is a factor...
4
EXPERT REPLIES
Last post by Rahul@gurome
Fri Oct 08, 2010 5:56 am
Number Theory question
by gig92 »
Can the positive integer p be expressed as the product of two...
2
EXPERT REPLIES
Last post by sk818020
Fri Oct 08, 2010 5:44 am
X and Y
by goyalsau »
Is x2 > 4x - 3y? (1) y > 0 and x > 4 (2) 4x -...
3
EXPERT REPLIES
Last post by sanju09
Fri Oct 08, 2010 5:05 am
x?
by sanju09 »
If x and y are positive integers, what is the value of x? (1) (3^x)...
1
EXPERT REPLIES
Last post by Rahul@gurome
Fri Oct 08, 2010 4:15 am
Easy but Tricky
by shovan85 »
On the number line shown, is zero halfway between a and b...
3
Last post by limestone
Fri Oct 08, 2010 3:15 am