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# This PS looks like DS

Author Message
TAGS:
Director
Joined: 19 Mar 2007
Posts: 524
Followers: 2

Kudos [?]: 8 [0], given: 0

This PS looks like DS [#permalink]  23 Apr 2007, 23:43
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
This PS looks like DS
Attachments

x y z.JPG [ 7.66 KiB | Viewed 559 times ]

Senior Manager
Joined: 01 Jan 2007
Posts: 326
Followers: 1

Kudos [?]: 17 [0], given: 0

x>y^2>z^4 -> x is a positive no.

this means that x, y and z can be positive nos greater than 1 in that case x>y>z hence I could be true.x, y and z can be positive nos greater than 0 but less than x>z>y hence III could also be true and i think z>y>x is not possible (i am not sure about the last statement).

Javed.

Cheers!
Director
Joined: 19 Mar 2007
Posts: 524
Followers: 2

Kudos [?]: 8 [0], given: 0

javed wrote:
x>y^2>z^4 -> x is a positive no.

this means that x, y and z can be positive nos greater than 1 in that case x>y>z hence I could be true.x, y and z can be positive nos greater than 0 but less than x>z>y hence III could also be true and i think z>y>x is not possible (i am not sure about the last statement).

Javed.

Cheers!

I also thought this way but it is not correct...
Director
Joined: 19 Mar 2007
Posts: 524
Followers: 2

Kudos [?]: 8 [0], given: 0

(II) is also possible but I don't understand why
Manager
Joined: 28 Aug 2006
Posts: 160
Followers: 2

Kudos [?]: 13 [0], given: 0

Three cases if treated seperate.

Lets say X=0.9, Y= 1/3, Z=1/2
Then statement I holds good

Statement II is good if
X=0.2, Y=1/3 and Z=1/2

Statement III is good if
X= 0.9, Y=1/3, Z=1/2

All statements are true if they are treated seperately.
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