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Is x an integer?

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Intern
Intern
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Joined: 04 Apr 2005
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Is x an integer? [#permalink] New post 15 Apr 2005, 12:52
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B
C
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Is x an integer?
1. x>0
2. 3^2 + 4^2 = x^2

Answer is B

I think C.

Please explain
Director
Director
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Joined: 18 Feb 2005
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Re: DS [#permalink] New post 15 Apr 2005, 14:49
tpass001 wrote:
Is x an integer?
1. x>0
2. 3^2 + 4^2 = x^2

Answer is B

I think C.

Please explain


From 1 you cannot tell anything because x may be anything rational number irrational number complex number integer

From 2 you get x= + or - 5 which in either case is a integer
Senior Manager
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Joined: 19 Feb 2005
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Location: Milan Italy
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 [#permalink] New post 16 Apr 2005, 01:18
it is easy to be deceived by (1)
You should try to read (2) first.
  [#permalink] 16 Apr 2005, 01:18
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Is x an integer?

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