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Data Sufficiency

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Last post
70 - Arithmetic Mean
by harsh.champ »
Was 70 the average (arithmetic mean) grade on a class test? (1) On...
2
Last post by shashank.ism
Sun Feb 21, 2010 2:42 pm
Simple interest
by crackgmat007 »
Q10: A total of $60,000 was invested for one year. Part of this...
7
Last post by shashank.ism
Sun Feb 21, 2010 1:37 pm
number line
by daretodream »
On the number line shown, is zero halfway between r and s ?...
4
Last post by shashank.ism
Sun Feb 21, 2010 12:56 pm
computer memory
by daretodream »
Each M-type memory unit will increase the base memory capacity of a...
3
Last post by shashank.ism
Sun Feb 21, 2010 12:51 pm
is n/15 an integer?
by daretodream »
If n is an integer, is n/15 an integer? (1) 3n/15 is an integer. (2)...
3
Last post by shashank.ism
Sun Feb 21, 2010 12:47 pm
perfect square
by daretodream »
Is the positive integer N a perfect square? (1) The number of...
5
Last post by shashank.ism
Sun Feb 21, 2010 12:29 pm
How many kilometers did Bill drive
by gmatnmein2010 »
On a certain day it took Bill three times as long to drive from home...
6
Last post by shashank.ism
Sun Feb 21, 2010 11:54 am
value of y
by daretodream »
If (y+3)(y-1) - (y-2)(y-1) = r(y-1), what is the value of y?...
3
Last post by shashank.ism
Sun Feb 21, 2010 8:11 am
bacteria population
by gmatnmein2010 »
By what percent will the bacteria population increase in 1 hour? (1)...
4
Last post by bhumika.k.shah
Sun Feb 21, 2010 7:59 am
Consecutive Integers
by harsh.champ »
Are the integers x, y and z consecutive? 1. The arithmetic mean...
2
Last post by shashank.ism
Sun Feb 21, 2010 7:39 am
Sheep
by harsh.champ »
How many ewes (female sheep) in a flock of 50 sheep are black? 1....
2
Last post by shashank.ism
Sun Feb 21, 2010 7:33 am
|x| <1 ?
by daretodream »
If x≠0, is |x| <1? (1) x2<1 (2) |x| < 1/x
3
Last post by shashank.ism
Sun Feb 21, 2010 7:09 am
x+y
by harsh.champ »
Given that x and y are real numbers, what is the value of x + y ? 1....
3
Last post by shashank.ism
Sun Feb 21, 2010 7:04 am
is p>q ?
by daretodream »
Is p > q? (1) p + 5q is positive. (2) p + 4q is negative.
3
Last post by shashank.ism
Sun Feb 21, 2010 7:01 am
Average
by harsh.champ »
What is the average of a, b, and c? 1. 2a + b + 4c = 23 2. 3a + 4b +...
3
Last post by shashank.ism
Sun Feb 21, 2010 6:51 am
x,n
by daretodream »
If n is a positive integer and x does not equal zero, is x^n >...
3
Last post by shashank.ism
Sun Feb 21, 2010 6:45 am
Total Score in golf
by harsh.champ »
What was Casey's total score for eighteen holes of golf? (1)...
3
Last post by shashank.ism
Sun Feb 21, 2010 6:40 am
x and 18
by sanju09 »
What is x equal to? (1) LCM of x and 18 is 36. (2) HCF of x and 18 is...
3
Last post by shashank.ism
Sun Feb 21, 2010 6:32 am
modulus
by thephoenix »
if y>=0 , what is the value of x? 1) lx-3l>=y 2) lx-3l<=-y
2
Last post by shashank.ism
Sun Feb 21, 2010 6:20 am
Number Properties + Average!!
by apoorva.srivastva »
The Values of five numbers are either 10,20 or 30. What is the...
5
Last post by shashank.ism
Sun Feb 21, 2010 6:14 am
Black and White Balls
by harsh.champ »
Two balls are to be picked at random from a drawer containing only...
4
EXPERT REPLIES
Last post by shashank.ism
Sun Feb 21, 2010 6:04 am
Co-ordinate Geometry
by harsh.champ »
What is the slope of line l which passes through the origin of a...
2
Last post by shashank.ism
Sun Feb 21, 2010 5:59 am
University-Faculty Numbers
by harsh.champ »
A university has 2,000 faculty members all of whom have a masters...
2
Last post by shashank.ism
Sun Feb 21, 2010 5:41 am
Male Officer: Female Officer
by harsh.champ »
What is the ratio of male to female officers in the police force in...
2
Last post by shashank.ism
Sun Feb 21, 2010 5:10 am
x-y = ?
by harsh.champ »
If x and y are both positive integers, how much greater is x than y?...
2
Last post by shashank.ism
Sun Feb 21, 2010 5:00 am
Number of Stairs Between Floors
by pierce22884 »
If the two floors in a certain building are 9 feet apart, how many...
4
Last post by shashank.ism
Sun Feb 21, 2010 4:50 am
Concert Ticket
by harsh.champ »
Every pupil in a school was given one ticket for a concert. The...
3
Last post by shashank.ism
Sun Feb 21, 2010 4:47 am
An empty swimming pool
by gmatnmein2010 »
An empty swimming pool with a capacity of 100,000 liters is to be...
2
Last post by shashank.ism
Sun Feb 21, 2010 4:33 am
Algebra Sequence & Series
by and1ms238 »
This problem comes from OG 12 #45. If r is a constant and an=an for...
4
Last post by harsh.champ
Sun Feb 21, 2010 4:19 am
Train
by gmatnmein2010 »
Stations X and Y are connected by two separate, straight, parallel...
3
Last post by harsh.champ
Sun Feb 21, 2010 3:20 am
material A
by gmatnmein2010 »
Material A costs $3 per kilogram, and material B costs $5 per...
2
Last post by shashank.ism
Sun Feb 21, 2010 2:44 am
x tons of gravel
by gmatnmein2010 »
A contractor combined x tons of a gravel mixture that contained 10%...
2
Last post by shashank.ism
Sun Feb 21, 2010 2:31 am
concentration of acid
by gmatnmein2010 »
Xgrams of water were added to the 80 grams of a strong solution of...
3
Last post by shashank.ism
Sun Feb 21, 2010 2:25 am
water(in grams)
by gmatnmein2010 »
How much water (in grams) should be added to a 35%-solution of acid...
2
Last post by shashank.ism
Sun Feb 21, 2010 2:19 am
value of x
by gmatnmein2010 »
if y>=0 , what is the value of x? 1) lx-3l>=y 2) lx-3l<=-y
2
Last post by shashank.ism
Sun Feb 21, 2010 1:29 am
integers
by gmatnmein2010 »
If x and y are integers and y = | x + 3| + | 4 - x|. Does y...
3
Last post by shashank.ism
Sun Feb 21, 2010 1:25 am
Line slope query
by abhi332 »
I have a doubt regarding slope of line if Line A have slope -5 and...
3
Last post by shashank.ism
Sun Feb 21, 2010 1:21 am
rent
by gmatnmein2010 »
The annual rent collected by a corporation from a certain building...
3
Last post by shashank.ism
Sun Feb 21, 2010 1:19 am
non zero integers
by gmatnmein2010 »
If x and y are non-zero integers and |x| + |y| = 32, what is xy? (1)...
3
Last post by shashank.ism
Sun Feb 21, 2010 1:04 am
year,probability,percentages
by bhumika.k.shah »
In year x, it rained on 40% of all Mondays and 20% of all Tuesdays....
9
Last post by shashank.ism
Sun Feb 21, 2010 12:42 am
Bob and Wendy
by gmatnmein2010 »
Bob and Wendy planned to walk from their home to a restaurant for...
3
Last post by shashank.ism
Sat Feb 20, 2010 10:20 pm
water tank
by gmatnmein2010 »
Working at a constant rate respectively, pumps X and Y took 48 hours...
2
Last post by shashank.ism
Sat Feb 20, 2010 10:14 pm
sparrow and a hawk
by gmatnmein2010 »
Starting from the same point, a sparrow and a hawk flew in opposite...
3
Last post by shashank.ism
Sat Feb 20, 2010 8:55 pm
Zero to the power
by onedayi'll »
Guys, The question might seems to be stupid but please bear with...
1
Last post by shashank.ism
Sat Feb 20, 2010 8:28 pm
radius of the circle
by gmatnmein2010 »
What is the radius of the circle pictured to the right? (1) The...
4
Last post by thephoenix
Sat Feb 20, 2010 8:14 pm
DS + Time and Distance
by harsh.champ »
How long did it take Henry to drive to work last Wednesday? (He did...
3
Last post by thephoenix
Sat Feb 20, 2010 7:53 pm
If Jim earns x dollars per hour
by gmatnmein2010 »
If Jim earns x dollars per hour, it will take him 4 hours to earn...
3
Last post by thephoenix
Sat Feb 20, 2010 6:29 pm
Milk
by shashank.ism »
A container is having 30 L of pure milk. In the first operation, 10 L...
1
Last post by money9111
Sat Feb 20, 2010 5:06 pm
integer
by gmatnmein2010 »
Is positive integer n - 1 a multiple of 3? (1) n3 - n...
4
Last post by onedayi'll
Sat Feb 20, 2010 4:09 pm
Is xy + z = z
by gmatnmein2010 »
Is xy + z = z, is |x-y| > 0 ? (1) x ≠ 0 (2) y = 0
5
Last post by shashank.ism
Sat Feb 20, 2010 1:46 pm