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Data Sufficiency

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A certain jar contains only b black marbles
by rakeshd347 »
A certain jar contains only b black marbles, w white marbles and r...
8
Last post by GMATGuruNY
Tue Oct 08, 2013 5:10 am
Integer
by vinay1983 »
If x, y, and z are integers greater than 1, and (3^27)(35^10)(z) =...
5
Last post by GMATGuruNY
Tue Oct 08, 2013 4:59 am
Nice One : Is x negative?
by himu »
Is x negative? (1) At least one of x and x2 is greater than x3. (2)...
6
Last post by lunarpower
Tue Oct 08, 2013 3:24 am
ab
by vinay1983 »
If ab ≠ 0, is ab > a/b ? (1) |b| > 1 (2) ab + a/b > 0
2
Last post by [email protected]
Tue Oct 08, 2013 12:52 am
quadratic coordinate plane
by jjayhart »
I can sort of make an educated guess conceptually, but I can't quite...
3
Last post by [email protected]
Mon Oct 07, 2013 11:30 pm
If 2 different representatives are to be selected at random
by rakeshd347 »
If 2 different representatives are to be selected at random from a...
7
Last post by GMATGuruNY
Mon Oct 07, 2013 6:03 pm
a+b
by vinay1983 »
What is the value of (a + b)2 ? (1) a = 15/b (2) (a - b)2 = 4
9
Last post by theCodeToGMAT
Sun Oct 06, 2013 10:23 pm
Divisible
by vinay1983 »
If x, n, and m are positive integers and x/n = m, is x divisible by...
1
Last post by Brent@GMATPrepNow
Sun Oct 06, 2013 8:59 am
A drawer contains 36 socks, and 2 socks are selected at rand
by rakeshd347 »
A drawer contains 36 socks, and 2 socks are selected at random...
2
Last post by [email protected]
Sun Oct 06, 2013 1:05 am
A jar contains 8 red marbles and y white marbles
by rakeshd347 »
A jar contains 8 red marbles and y white marbles. If Joan takes 2...
2
Last post by [email protected]
Sun Oct 06, 2013 12:56 am
A manufacturer
by Java_85 »
A manufacturer conducted a survey to determine how many people buy...
7
Last post by Brent@GMATPrepNow
Sat Oct 05, 2013 5:42 pm
x,12,1,3,8
by Java_85 »
If x is an integer, is the median of the 5 numbers shown greater than...
1
Last post by Brent@GMATPrepNow
Sat Oct 05, 2013 3:46 pm
Machines A and B each produce tablets at their respective
by [email protected] »
Machines A and B each produce tablets at their respective constant...
14
Last post by GMATGuruNY
Sat Oct 05, 2013 1:25 pm
For a certain exam, was the standard deviation of the scores
by rakeshd347 »
For a certain exam, was the standard deviation of the scores for...
2
Last post by Brent@GMATPrepNow
Sat Oct 05, 2013 7:14 am
DS Sequence.
by rakeshd347 »
Is the product of all of the elements in Set S negative? (1) All of...
3
Last post by GMATGuruNY
Sat Oct 05, 2013 3:57 am
DS Sequence.
by rakeshd347 »
K is a set of numbers such that (i) If x is in K, then -x is in K,...
5
Last post by GMATGuruNY
Sat Oct 05, 2013 3:46 am
DS sequence.
by rakeshd347 »
Given a sequence: a1,a2,a3,a4...... In the sequence...
5
Last post by GMATGuruNY
Sat Oct 05, 2013 3:42 am
Positive integer x is rounded to the nearest ten ...
by gmattesttaker2 »
Hello, Can you please assist with this question from MGMAT CAT? If...
3
Last post by rakeshd347
Fri Oct 04, 2013 10:43 pm
How to choose numbers ?
by Uva@90 »
If a,b,c,d are positive number, is a/b less than c/d ? 1) 0 less than...
6
Last post by Uva@90
Fri Oct 04, 2013 6:35 pm
If w + x < 0, is w – y > 0? (1) x + y < 0 (2
by theCodeToGMAT »
If w + x < 0, is w - y > 0? (1) x + y < 0 (2) y <...
16
Last post by gmattesttaker2
Fri Oct 04, 2013 6:04 pm
help
by sana.noor »
In the first year of a pyramid scheme, John convinced y of his...
6
Last post by [email protected]
Fri Oct 04, 2013 1:24 pm
If x is an integer, does x have a factor n such that 1 <
by rakeshd347 »
If x is an integer, does x have a factor n such that 1 < n < x?...
3
Last post by ceilidh.erickson
Fri Oct 04, 2013 12:59 pm
Inequality Tough question
by rakeshd347 »
If x is not equal to 0, is |x| less than 1? (1) x/|x|< x (2) |x|...
5
Last post by ceilidh.erickson
Fri Oct 04, 2013 12:40 pm
help
by sana.noor »
In the first year of a pyramid scheme, John convinced y of his...
2
Last post by GMATGuruNY
Fri Oct 04, 2013 10:26 am
A school administrator will assign each student
by rakeshd347 »
A school administrator will assign each student in a group of N...
2
Last post by Brent@GMATPrepNow
Thu Oct 03, 2013 10:39 pm
Very tricky DS question
by rakeshd347 »
Laura sells encyclopaedias, and her monthly income has two...
2
Last post by GMATGuruNY
Thu Oct 03, 2013 7:32 pm
Divisibility
by Winner2013 »
If 0 < x < 1, is it possible to write x as a terminating...
2
Last post by Winner2013
Thu Oct 03, 2013 7:26 pm
Refined Number - Nice Question
by theCodeToGMAT »
If a number is drawn at random from the first 1000 positive integers,...
3
Last post by Brent@GMATPrepNow
Thu Oct 03, 2013 6:07 am
Inequality Tough question
by rakeshd347 »
If x+y+z > 0, is z > 1 ? (1) z > x + y + 1 (2) x + y + 1...
1
Last post by Brent@GMATPrepNow
Wed Oct 02, 2013 7:31 pm
Press machine
by SaraLotfy »
On Sunday morning, a printing press printed its newspapers at a...
2
Last post by rakeshd347
Wed Oct 02, 2013 6:54 pm
DS
by ixjoec »
If x is a positive number less than 10, is z greater than the average...
5
Last post by theCodeToGMAT
Wed Oct 02, 2013 4:53 am
Adding y on both sides of the in-equality
by gmattesttaker2 »
Hello, I was wondering if you can please assist with this: Is x - y +...
16
Last post by theCodeToGMAT
Tue Oct 01, 2013 11:54 pm
Arithmetic Sets: Club X and Club Y
by jjayhart »
The OG explanation wasn't particularly clear on this one. What is the...
1
Last post by GMATGuruNY
Tue Oct 01, 2013 1:16 pm
Division and remainder
by saidov.mikhail »
If n is a positive integer and r is the remainder when 4+7n is...
8
Last post by theCodeToGMAT
Tue Oct 01, 2013 10:02 am
Mark
by greenwich »
If Mark saved an average (arithmetic mean) of $80 per week for 3...
3
Last post by GMATGuruNY
Tue Oct 01, 2013 3:10 am
S and T are two water pumps that run at constant rates.
by jose.mario.amaya »
S and T are two water pumps that run at constant rates. If...
2
Last post by GMATGuruNY
Mon Sep 30, 2013 12:38 pm
Angles
by fourteenstix »
2
Last post by Rohit.Singh
Mon Sep 30, 2013 10:23 am
Integer
by vinay1983 »
If x and y are positive integers such that x > y, what is the...
4
Last post by Brent@GMATPrepNow
Mon Sep 30, 2013 8:28 am
How to do this?
by [email protected] »
In the xy-plane, at what two points does the graph of y = (x +...
4
Last post by Brent@GMATPrepNow
Sun Sep 29, 2013 8:32 pm
DS: Range
by parulmahajan89 »
For students in class A, the range of their heights is r centimeters...
4
Last post by GMATGuruNY
Sun Sep 29, 2013 1:33 pm
Probability - White Balls in Box
by fourteenstix »
1
Last post by Brent@GMATPrepNow
Sat Sep 28, 2013 3:36 pm
Trapezoid, Area, Triangles
by fourteenstix »
How do you do this?
3
Last post by [email protected]
Sat Sep 28, 2013 12:37 pm
Tough DS question
by ani781 »
Hi, I am just not being able to visualize this one : Theater M has 25...
4
Last post by theCodeToGMAT
Fri Sep 27, 2013 8:27 pm
X=Y
by vinay1983 »
Is x=y? 1. (x+y)* = 4 2. (x-50)^2 = (y-50)^2
4
Last post by vinay1983
Fri Sep 27, 2013 5:14 pm
Need help with this DS
by ani781 »
Hi, i need help on this question. During a 10-week summer...
4
Last post by Java_85
Fri Sep 27, 2013 1:26 pm
R, S, & T all have the same remainder when divided by 5.
by fourteenstix »
Interested to see how you solve this one. I thought the answer was E...
3
Last post by Java_85
Fri Sep 27, 2013 1:14 pm
Mean and Median
by vinay1983 »
If x is an integer and x,5,6,11,19 are a set of numbers, is the...
3
Last post by Brent@GMATPrepNow
Thu Sep 26, 2013 5:10 am
A reasoning based data sufficiency question
by georgeanand »
What is the answer to this DS question? Is my age over 40? A.The...
3
Last post by theCodeToGMAT
Wed Sep 25, 2013 11:55 pm
Is the probability P(A and B) > 1/3?
by Mike@Magoosh »
Suppose A and B are two events. Is the probability P(A and B) >...
3
Last post by theCodeToGMAT
Wed Sep 25, 2013 8:14 pm
Rates
by jose.mario.amaya »
John, Michael and Sameer paddled a boat for about 1500 feet. Who...
1
Last post by GMATGuruNY
Wed Sep 25, 2013 3:33 pm