Search found 60 matches
Re: looks easy but may be tough
Does the rectangle have an area less than 30? (1) Perimeter = 20 (2) Diagonal < 10 OA given is A. But I feel it should be D. What do you say? to maximize an area of a rectangle make it a square ( a square is a special type of rectangle which in turn is a special type of parallelogram. from one squa...
- by yezz
Tue Aug 18, 2009 5:40 pm- Forum: Data Sufficiency
- Topic: looks easy but may be tough
- Replies: 7
- Views: 1762
Re: inqeualities ds
the question is wrongern5231 wrote:Is x^2+x>-y^2?
(1) x^2+y^2=1
(2) x>0
x^2+x>-y^2
-(x^2+x)<y^2 is sure no need for either statments.
plz revise and re post
- by yezz
Tue Aug 18, 2009 5:30 pm- Forum: Data Sufficiency
- Topic: inqeualities ds
- Replies: 5
- Views: 1396
OA is A. from statement 1 you have the area of ABC. this is sufficient to answer the question. from statement 2 you have the length of one of the verticies. From here you can probably find the corresponding vertice of RCS, but you can not find the surface area. insufficient Two triangles are simila...
- by yezz
Tue Aug 18, 2009 3:46 pm- Forum: Data Sufficiency
- Topic: Triangle
- Replies: 5
- Views: 1721
Re: Is x a positive number?
EbrahimHashem wrote:Is x a positive number?
(1) x + 6>2
(2) X^2 > 25
1) x>-4...insuff
from 2
/x/>5
either
x<-5 or x>5....insuff
both
x>5...C
- by yezz
Tue Aug 18, 2009 9:40 am- Forum: Data Sufficiency
- Topic: Is x a positive number?
- Replies: 11
- Views: 3816
Re: DS with Exponents
xy = 1 either x=y = 1 or -1 or x,y are reciprocals, no idea about a,b...insuffern5231 wrote:What is the value of (x^2a)*(y^3b)?
(1) xy=1
(2) a=b=3
from2
x,y not known..insuff
both
x^6 * y^9 = (xy)^6 * y^3 = 1*y^3..insuff
E
- by yezz
Mon Aug 17, 2009 3:32 pm- Forum: Data Sufficiency
- Topic: DS with Exponents
- Replies: 2
- Views: 1258
Re: if X>1 and Y>1, is X<Y?
1) x/y+1<1 ie: x<y+1...insuffgmat740 wrote:if X>1 and Y>1, is X<Y?
(1) X^2/(XY+X)<1
(2) XY/Y^2-Y<1
[spoiler]IMO-B
OA-E[/spoiler]
from 2
x/y-1 <1 ie: x<y-1...suff
OE is wrong
- by yezz
Mon Aug 17, 2009 3:29 pm- Forum: Data Sufficiency
- Topic: if X>1 and Y>1, is X<Y?
- Replies: 9
- Views: 6870
Re: Try This- a good puzzle
Of the science books in a certain supply room, 50 are on botany, 65 are on zoology, 90 are on physics. 50 are on geology, and 110 are on chemistry. If science books are removed randomly from the supply room, how many must be removed to ensure that 80 of the books removed are on the same science? (A...
- by yezz
Mon Aug 17, 2009 8:06 am- Forum: Problem Solving
- Topic: Try This- a good puzzle
- Replies: 6
- Views: 1573
Re: Is |x| = y-z
X = Y-Z WHEN X>0 OR X = Z-Y WHEN X<0madhur_ahuja wrote:Is |x| = y-z ?
1. x + y = z
2. x < 0
FROM 1
X+Y=Z IE: X = Z-Y , HOWEVER THIS IS ONLY VALID IF X<0...WE DONT KNOW THAT
FROM 2
INSUFF
BOTH ................C
- by yezz
Mon Aug 17, 2009 5:58 am- Forum: Data Sufficiency
- Topic: Is |x| = y-z
- Replies: 10
- Views: 2088
Re: inequalities with mod ds
ern5231 wrote:Given that S>0. Is S>T?
(1) | st | = t
(2) | st | = 7
from 1
t is 0 and s anything or s = 1 (s is +ve given ) and t is +ve or -ve
from 2
s,t could be anything
both
t = 7 or -7thus s = 1...insuff
E
- by yezz
Mon Aug 17, 2009 5:52 am- Forum: Data Sufficiency
- Topic: inequalities with mod ds
- Replies: 14
- Views: 2355
Re: Remainder R
joyseychow wrote:If n is a positive integer and r is the remainder when 4+7n divided by 3, what is the value of r?
(1) n+1 is divisible by 3
(2) n>20
4+7n = (3+6n)+(n+1)
from 1
n+1 is dev by 3 thus as 3+6n is devis by 3 the whole expression 4+7n is too
- by yezz
Sat Aug 15, 2009 1:55 pm- Forum: Data Sufficiency
- Topic: Remainder R
- Replies: 14
- Views: 5789
Re: Modulus Doubt
madhur_ahuja wrote:Is x > 0?
(1) |x + 3| = 4x – 3
(2) |x + 1| = 2x – 1
from 1
x+3 = 4x-3 ie: x = 2 or x+3 = 3-4x ie: x = 0,,,insuff
from 2
x+1 = 2x-1 ie: x = 2 or x+1 = 1-2x ie: x = 0..insuff
both
insuff
E
- by yezz
Sat Aug 15, 2009 1:48 pm- Forum: Data Sufficiency
- Topic: Modulus Doubt
- Replies: 5
- Views: 1573
Re: Modulus Doubt
madhur_ahuja wrote:Is x > 0?
(1) |x + 3| = 4x – 3
(2) |x + 1| = 2x – 1
from 1
x+3 = 4x-3 ie: x = 2 or x+3 = 3-4x ie: x = 0,,,insuff
from 2
x+1 = 2x-1 ie: x = 2 or x+1 = 1-2x ie: x = 0..insuff
both
insuff
E
- by yezz
Sat Aug 15, 2009 1:45 pm- Forum: Data Sufficiency
- Topic: Modulus Doubt
- Replies: 5
- Views: 1573
madhur_ahuja wrote:Can you elaborate ?. Let me post the questionrobbie523 wrote:only why Y is positive, then Z can be greater than X.
zy<xy Is y > 0
1. z<x
from given
y<x-z is y>0
from 1
z-x<0 ie: x-z>0, using this info and plugging in the given
y<+ve doesnt imply that y is +ve...insuff
- by yezz
Sat Aug 15, 2009 1:43 pm- Forum: Data Sufficiency
- Topic: Conceptual question
- Replies: 7
- Views: 1597
Re: Data Sufficiency help
Here's the question. Of the 230 single-family homes built in City X last yr, how many were occupied at the end of the year? 1) Of all the single-family homes in City X, 90 % were occupied at the end of last yr. 2) A total of 7,200 single-family homes in City X were occupied at the end of last yr. t...
- by yezz
Sat Aug 15, 2009 1:39 pm- Forum: Data Sufficiency
- Topic: Data Sufficiency help
- Replies: 2
- Views: 1645
- by yezz
Sat Nov 29, 2008 12:19 pm- Forum: Ask an MBA Admissions Consultant
- Topic: Essay advice request... please help
- Replies: 1
- Views: 1365