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Data Sufficiency

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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
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
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
14)DS ques
by ern5231 »
Is X ^ 2>-X? (1) X <1 (2) X> -1
2
Last post by rsruparelia
Sat Sep 26, 2009 9:21 am
Annual profit
by treker »
Company R's annual profit has increased by a constant amount each...
1
Last post by rsruparelia
Sat Sep 26, 2009 9:11 am
17) DS
by ern5231 »
Is X>Y? 1) 2X-Y>0 2) Y<0
3
Last post by rsruparelia
Sat Sep 26, 2009 8:12 am
absolute confusion
by dikku07 »
Is �x�< 1? (1) �!x + 1!� = 2�!x...
3
Last post by sunnyjohn
Sat Sep 26, 2009 6:58 am
per capita income
by dikku07 »
In a demographic study, the population and total income of a certain...
2
Last post by dikku07
Sat Sep 26, 2009 6:39 am
Art Gallery Race
by smclean23 »
The figure above represents the floor plan of an art gallery that has...
2
Last post by mohitsharda
Sat Sep 26, 2009 2:31 am
DS1-10 #24 Is x^2 - y^2 a positive number?
by swatirpr »
Is x^2 - y^2 a positive number? (1) x - y is a positive number. (2) x...
2
Last post by swatirpr
Fri Sep 25, 2009 12:09 pm
20 k is divisible
by sanju09 »
If k is a positive integer, then 20 k is divisible by how many...
7
Last post by sanju09
Fri Sep 25, 2009 2:40 am
DS - Odd
by Xbond »
Hi there, could you help to understand and resolve this PS in the...
4
Last post by Xbond
Thu Sep 24, 2009 11:36 pm
angles of a quadrilateral
by mkhanna »
Is the measure of one of interior angles of the quadrilateral ABCD...
2
Last post by grockit_jake
Thu Sep 24, 2009 3:40 pm
Two lines intersect...
by Svedankae »
Hello, just a quick question: In a MGMAT CAT i came across this...
2
Last post by Svedankae
Thu Sep 24, 2009 12:07 pm
circle-line intersection
by mkhanna »
Circle C and line K lie in the xy-plane. If circle C is centered at...
2
Last post by maihuna
Thu Sep 24, 2009 9:21 am
OG 12th edition , Q66
by mkhanna »
data sufficiency problem: If n and t are positive integers, is n a...
1
Last post by Brent@GMATPrepNow
Thu Sep 24, 2009 7:47 am
company's profit
by dikku07 »
A construction company was paid a total of $500,000 for a...
3
Last post by dikku07
Thu Sep 24, 2009 6:22 am
DS: Averages Question
by DCJ »
Can someone explain? Ten different items are for sale in a store, and...
1
Last post by praky_rules
Wed Sep 23, 2009 4:47 pm
Probability of white or even
by scorpion_phoenix »
Each of the 25 balls in a certain box is either red blue or white and...
3
Last post by scorpion_phoenix
Wed Sep 23, 2009 8:15 am
Carolyn & Jacob
by Gmat09_5ALL »
During a 10-week summer vacation, was the average (arithmetic mean)...
6
Last post by scoobydooby
Wed Sep 23, 2009 3:44 am
DS: Standard Deviation
by DCJ »
What is the standard deviation of Company R's earnings per...
2
Last post by Ian Stewart
Wed Sep 23, 2009 2:12 am
If x is a positive integer, is x^1/2 < 2.5x - 5
by ogbeni »
If x is a positive integer, is x^1/2 < 2.5x - 5 ? 1. x < 3 2. x...
3
Last post by maximus123
Wed Sep 23, 2009 12:17 am