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# This PS looks like DS

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Director
Joined: 19 Mar 2007
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This PS looks like DS [#permalink]

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23 Apr 2007, 23:43
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This PS looks like DS
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Senior Manager
Joined: 01 Jan 2007
Posts: 325
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24 Apr 2007, 00:54
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: 3

Kudos [?]: 32 [0], given: 0

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24 Apr 2007, 03:39
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: 3

Kudos [?]: 32 [0], given: 0

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24 Apr 2007, 11:44
(II) is also possible but I don't understand why
Manager
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24 Apr 2007, 12:50
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.
24 Apr 2007, 12:50
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