Search found 61 matches
Ans: c = 2.sushbis wrote:A triangle has coordinates (0,0),(0,4) and (6,0), if line y=c divided the
triangle equally, c=?
- by n@resh
Tue Oct 11, 2011 9:55 am- Forum: Problem Solving
- Topic: Geometry question
- Replies: 10
- Views: 1753
what abt the second qsn? Is it A for that? i think even it's C! from 2nd stmt: abc>0, a = -3, b= -2, c = 4 ; => -2+4 > -3 ( True) a = 8, b = 10, c = 4; => 10 +4 > 8 ( True) a = -8, b = 10, c = -20; => 10-20 > -8 ( False) Not sufficient! Using both the statements 1 and 2, we have c>a and abc>0 i.e. ...
- by n@resh
Tue Oct 11, 2011 7:27 am- Forum: Data Sufficiency
- Topic: GMAT PREP:Good question on Inequalities
- Replies: 11
- Views: 1977
first one IMO A ? 1. If a, b, c are integers such that b > a, is b + c > a? from (1) c > a: let a = -3, b = -2, and c = -1 ; => -2-1 > -3 (FALSE) let a = 4, C = 5, and b = 6; => 11> 4 ( True) i think it's not sufficient! from (2), it's not sufficient as well! ( already proved by @4GMAT_Mumbai) Usin...
- by n@resh
Tue Oct 11, 2011 6:49 am- Forum: Data Sufficiency
- Topic: GMAT PREP:Good question on Inequalities
- Replies: 11
- Views: 1977
I think my wording in the previous reply was very poor. If (x+y)^2 > 200 We could have x=14 and y =2 which would satisfy 14^2+2^2 = 200. Here x+y=16. and (x+y)^2 would be 256.(which is > 200) We need to find the minimum value of x+y which would satisfy (x+y)^2 > 200. I think that would be when x=y ...
- by n@resh
Mon Oct 10, 2011 12:59 pm- Forum: Data Sufficiency
- Topic: x2 + y2
- Replies: 14
- Views: 7455
- by n@resh
Mon Oct 10, 2011 10:20 am- Forum: Data Sufficiency
- Topic: Inequalities.
- Replies: 4
- Views: 1290
X = 2/3 and 6 for two different cases.Neha Mittal wrote:|x+2| = 2|x-2| find range of x
I do not understand why x = 6 is an invalid solution
so range will be : [2/3, 6)
- by n@resh
Mon Oct 10, 2011 10:20 am- Forum: Data Sufficiency
- Topic: Inequalities.
- Replies: 4
- Views: 1290
If a and b are integers, and |a| > |b|, is a · |b| < a – b? (1) a < 0 (2) ab 0 OA : [spoiler]E Can someone please explain??[/spoiler] From stat1: a < 0, plug-in numbers: a = -1, b = 0 ; 0 < -1 ( FALSE) a = -2, b = 1 ; -2 < -3 (FALSE) a = -2, b = -1 ; -2 < -1 ( TRUE) clearly, not sufficient. From...
- by n@resh
Mon Oct 10, 2011 8:23 am- Forum: Data Sufficiency
- Topic: Abominable ABs
- Replies: 7
- Views: 1314
If a and b are integers, and |a| > |b|, is a · |b| < a – b? (1) a < 0 (2) ab 0 OA : [spoiler]E Can someone please explain??[/spoiler] From stat1: a < 0, plug-in numbers: a = -1, b = 0 ; 0 < -1 ( FALSE) a = -2, b = 1 ; -2 < -3 (FALSE) a = -2, b = -1 ; -2 < -1 ( TRUE) clearly, not sufficient. From...
- by n@resh
Mon Oct 10, 2011 6:36 am- Forum: Data Sufficiency
- Topic: Abominable ABs
- Replies: 7
- Views: 1314
#1: lines n and p lie in the xy plane. Is the slope of line n less than the slope of line p? (1) lines n and p intersect at point (5,1) (2) the y-intercept of n is greater that the y-intercept of p. Ans: C! From stat(1): we have a point of intersection:(5,1) for the lines n ( Yn = -(Bn/An)Xn + Bn ) ...
- by n@resh
Sun Oct 09, 2011 9:21 am- Forum: Data Sufficiency
- Topic: tricky DS questions
- Replies: 8
- Views: 1712
To install cable television at home, a certain cable company charges a basic fee of $30 plus a fee of $20 for each cable outlet installed at home. How much did the cable company charge the Horace family for installing cable televiosn at their home? 1. The cable company installed three outlets in th...
- by n@resh
Sun Oct 09, 2011 8:33 am- Forum: Data Sufficiency
- Topic: Television sets
- Replies: 1
- Views: 1029
If x is positive, which of the following could be the correct ordering of 1/x, 2x, and x²? I. x² < 2x < 1/x II. x² < 1/x < 2x III. 2x < x² < 1/x a. None b. I c. III d. I and II e. I, II, and III Determine the critical points by setting the expressions equal to each other: 1/x = 2x 2x² = 1 x² ...
- by n@resh
Sat Oct 08, 2011 12:47 pm- Forum: Problem Solving
- Topic: Need explanation
- Replies: 5
- Views: 2524
Please help solve this exponent problem from Gmat Prep and in general how to solve such problem. Also how much time should this problem take Thanks Here if X is positive: that means it can be either any positive integer or any fraction! like x = 2, 1/2, 3,4,...etc so, you consider various values of...
- by n@resh
Fri Oct 07, 2011 11:24 am- Forum: Data Sufficiency
- Topic: GMAT PREP exponent problem
- Replies: 11
- Views: 2145
if x is NOT = 0, is (x^2 +1)/x > Y? (1) x = y (2) y>0 I don't understand how (1) is not sufficient. To multiply by variable, we need to take the positive and the negative: (x^2 +1)/x > Y x^2 +1 > xy ? And stmt 1 says y=y hence the question becomes, x^2+1>x^2 ? In which case, YES! regardless of whet...
- by n@resh
Thu Oct 06, 2011 12:23 pm- Forum: Data Sufficiency
- Topic: tough inequality
- Replies: 3
- Views: 1451
In a triangle ACB, if a) angle ACB is a right angle b) CE intersects AB c) and CB = 5 what is the length of side AB? (1) CE is perpendicular to AB (2) AE = EB OA is C But I am getting A Could anyone please explain? Thanks! It's Answer is C! Only by using two statements, you'll be able to calculate ...
- by n@resh
Mon Sep 12, 2011 7:44 pm- Forum: Data Sufficiency
- Topic: What's AB?
- Replies: 9
- Views: 1496
The United States has experienced a big growth in job creation. This trend has continued for several years and will soon eliminate the problem of joblessness. Which one of the answers below is an error in the reasoning that leads to the above prediction? (A) It does not quote numbers showing how jo...
- by n@resh
Mon Sep 12, 2011 12:51 pm- Forum: Critical Reasoning
- Topic: Joblessness
- Replies: 6
- Views: 1329