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If x is an integer, what is the value of x? (1)

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Senior Manager
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If x is an integer, what is the value of x? (1) [#permalink] New post 02 May 2011, 04:00
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A
B
C
D
E

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  45% (medium)

Question Stats:

50% (01:47) correct 50% (01:08) wrong based on 8 sessions
If √x is an integer, what is the value of √x?
(1) 11<x<17
(2) 2<√x<5
[Reveal] Spoiler: OA

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Re: Square root [#permalink] New post 02 May 2011, 04:52
If sqrt(x) is integer then x is integer

From 1) x can be 12,13,14,15,16

Only sqrt(16) is integer. Hence sqrt(x) = 4. Sufficient.

From 2) sqrt(x) can be 3 or 4. x can be 9 or 16. Not sufficient.

Hence A.

jamifahad wrote:
If √x is an integer, what is the value of √x?
(1) 11<x<17
(2) 2<√x<5
Senior Manager
Senior Manager
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Joined: 03 Mar 2010
Posts: 445
Schools: Kelley,Tepper,Carlson,Kenan Flager,Broad
Followers: 4

Kudos [?]: 119 [0], given: 22

Re: Square root [#permalink] New post 02 May 2011, 05:22
Thanks. i was bit confused with (2). sqrt(x) is an integer not x itself hence sqrt(x) can be 3 or 4 with x non-integer and integer respectively.
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Re: Square root [#permalink] New post 03 May 2011, 20:04
for B, x^(1/2) = 3,4. Hence POE.
thus A.
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Re: Square root   [#permalink] 03 May 2011, 20:04
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