Search found 12 matches
- by vinod_ece66
Thu Jul 17, 2008 8:37 am- Forum: Problem Solving
- Topic: exponents
- Replies: 5
- Views: 2049
is 1/8 the answer if that is the answer the solution is y-x =1 is the line which passes through points (1,2) and (0,1) and y-x>1 corresponds to area above this line the total area of the square is 4 the area of the region above the line y-x=1 is 1/2*1*1 = 1/2 hence the probability is 1/2 divided by ...
- by vinod_ece66
Wed Jun 25, 2008 9:53 am- Forum: Problem Solving
- Topic: a good questions
- Replies: 7
- Views: 1709
Is the answer C a) x and y prime numbers the product can be both even or odd for even x= 2 y=3 for odd y=2 x=3 so not sufficient b) y>7 for even x=2 y=8 for odd x =3 y=9 not sufficient however combining both we can say the y+1 term is always going to be even. hence even*even =even or odd*even = even
- by vinod_ece66
Tue Jun 17, 2008 10:24 am- Forum: Data Sufficiency
- Topic: From GMAT Prep
- Replies: 7
- Views: 2406
Keep substituting values for x and note the corresponding values of y. You will see that there is a line which will pass through all the three quadrants expect 2nd quadrant.
ex: x=0 y=-5
x=1 y=0
x=2 y=3
x=3 y=4
x=-1 y=4
- by vinod_ece66
Thu Jun 12, 2008 9:05 am- Forum: Problem Solving
- Topic: coordinate geometry
- Replies: 6
- Views: 4120
- by vinod_ece66
Fri Jun 06, 2008 6:03 pm- Forum: Sentence Correction
- Topic: needs help
- Replies: 2
- Views: 1390
needs help
Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo's development. (A) tell individual genes both when to become active and when to remain (B) tell individual genes both a...
- by vinod_ece66
Fri Jun 06, 2008 3:10 pm- Forum: Sentence Correction
- Topic: needs help
- Replies: 2
- Views: 1390
- by vinod_ece66
Fri Jun 06, 2008 1:15 pm- Forum: Data Sufficiency
- Topic: need help in this DS
- Replies: 1
- Views: 1292
- by vinod_ece66
Wed Jun 04, 2008 9:27 pm- Forum: Data Sufficiency
- Topic: inequalities
- Replies: 2
- Views: 1601
inequalities
how can this be solved?
If x is a positive number, is x greater than 1?
(1) 1> 1/x
(2) -1/x > -1
- by vinod_ece66
Wed Jun 04, 2008 4:57 pm- Forum: Data Sufficiency
- Topic: inequalities
- Replies: 2
- Views: 1601
FOR EACH OF THE 12 EXPERIENCED GUYS WE CAN SELECT 2 INEXPERIENCED GUYS FROM THE GROUP OF 9
HENCE IT SHOULD BE 12*(9C2) == 432
- by vinod_ece66
Fri May 23, 2008 7:15 am- Forum: Data Sufficiency
- Topic: GMAT Crew
- Replies: 2
- Views: 1364
since CE =DE ==>ANGLE ECD = ANGLE CDE
Since one angle is 45 the other two angles must be 67.5 respectively.
Also since AB || CE Angle x = angle ECD ==
==> X = 67.5
- by vinod_ece66
Fri May 23, 2008 6:59 am- Forum: Problem Solving
- Topic: Geometry
- Replies: 2
- Views: 1675
i think the answer should be C
the solution goes like this:
|x|+|y|=32
|x|-|y|=16
==>2|x|=48 or |x|=24
Hence x can be 24 or -24;
also x = -3y;
hence if x =24 then y = -8
and if x = -24 then y = 8
either way xy = -(24* 8)
Hence answer is c
Correct me if i am wrong
- by vinod_ece66
Wed May 21, 2008 11:51 am- Forum: Data Sufficiency
- Topic: Try this one from MGMAT
- Replies: 4
- Views: 1285