|
Author |
Message |
|
TAGS:
|
|
|
Manager
Joined: 06 Apr 2010
Posts: 149
Location: Pune
Schools: INSEAD, ISB, HKUST, HEC Paris, Warwick
WE 1: 2 yrs Credit Analyst
WE 2: 5 yrs Transition Manager
Followers: 3
Kudos [?]:
16
[0], given: 11
|
If x and y are positive, is x3 > y? (1) x > y (2) x > y [#permalink]
 23 Jun 2010, 12:30
I have problem in solving following DS questions from SET1 (I don't know the source of this). Can anyone help me in resolvign them?
DS Questions: Need help
Q16:
If x and y are positive, is x3 > y?
(1) x > y
(2) x > y
|
|
|
|
|
|
|
Manager
Joined: 04 May 2010
Posts: 89
WE 1: 2 yrs - Oilfield Service
Followers: 7
Kudos [?]:
44
[0], given: 7
|
Re: Need Solution for some DS problems from SET1 [#permalink]
24 Jun 2010, 00:29
Statement 1 is actually "root(x) > y"
x>0 and y>0 Is x^3 > y?
From statement 1:
root(x) > y
Test cases:
x = 4 and y = 1 => root(x) = 2 > 1. x^3 = 64 > 1 ... Answer : Yes
x = 0.01 and y = 0.005 => root(x) = 0.1 > 0.05. x^3 = 0.001 < 0.005 ...Answer: No
INSUFFICIENT
From statement 2:
x > y
Test cases:
x = 2 and y = 3 => x^3 = 8 > 3. Answer -Yes
x = 0.1 and y = 0.01 => x^3 = 0.001 < 0.01. Answer - No
INSUFFICIENT
Both 1 and 2 together:
Test cases:
x = 4 and y = 1 satisfies both statements, and x^3 > y is true.
x = 0.01 and y = 0.005 satisfies both statements and x^3>y is false.
INSUFFICIENT.
Pick E.
|
|
|
|
|
|
|
Re: Need Solution for some DS problems from SET1
[#permalink]
24 Jun 2010, 00:29
|
|
|
|
|
|
|
|
|
Similar topics |
Author |
Replies |
Last post |
|
Similar
Topics:
|
 |
|
|
If x and y are positive, is x^3 > y? (1) x^1/2 > y (2)
|
linker |
2 |
03 Oct 2004, 08:09 |
|
|
|
|
If x and y are positive, is x^3 > y? (1) x^(1/2) > y
|
dinesh8 |
9 |
06 May 2006, 06:18 |
|
|
|
|
If x and y are positive, is x^3 > y? (1) x^1/2 > y (2)
|
apollo168 |
5 |
25 Aug 2006, 09:24 |
|
|
|
|
If x and y are positive, is x^3 > y ? (1) x^1/2 > y
|
dancinggeometry |
5 |
06 Sep 2008, 00:26 |
|
|
1
|
 |
If x and y are positive, is x^3 > y? (1) x^1/2 > y (2)
|
msand |
2 |
27 Dec 2009, 10:58 |
|
|
|
|
|
|
close
