Is the positive square root of x an integer? (1) x = n^4 and : DS Archive
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# Is the positive square root of x an integer? (1) x = n^4 and

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Senior Manager
Joined: 26 Jul 2005
Posts: 314
Location: Los Angeles
Followers: 1

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

Is the positive square root of x an integer? (1) x = n^4 and [#permalink]

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27 Oct 2005, 15:30
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Is the positive square root of x an integer?

(1) x = n^4 and n is an integer
(2) x = 16
Manager
Joined: 20 Mar 2005
Posts: 201
Location: Colombia, South America
Followers: 1

Kudos [?]: 16 [0], given: 0

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27 Oct 2005, 16:00
from I

x= n^4 then square root is n^(4/2) is equal to n^2 and integer as n is also an integer

from II

x= 16 so 16^1/2 is equal to 4

so i would pick D
27 Oct 2005, 16:00
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