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# X|!=1 —How many integer solutions are there? A. Four

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SVP
Joined: 03 Feb 2003
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X|!=1 —How many integer solutions are there? A. Four [#permalink]

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06 Jun 2003, 00:41
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

|X|!=1 —How many integer solutions are there?

A. Four
B. Three
C. Two
D. One
E. None
Manager
Joined: 03 Jun 2003
Posts: 84
Location: Uruguay
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06 Jun 2003, 12:56
I go with three either , 1, -1 and 0
SVP
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07 Jun 2003, 00:10
I told you that it is simple...
Intern
Joined: 18 Feb 2005
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14 Mar 2006, 20:20
thank u guru stolyar!
Intern
Joined: 15 Mar 2006
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15 Mar 2006, 21:44
Ok, my analysis

0!=1! =1

Thus x can be 0, 1, -1
Current Student
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15 Mar 2006, 21:49
(B). We must know that 0!=1
Manager
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16 Mar 2006, 11:54
A good one! I had no clue that 0! = 1

but now I know

thanks stolyar...
16 Mar 2006, 11:54
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