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# x is not equal to 0. Is x+y=0? 1. x is reciprocal of y. 2. x

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Intern
Joined: 07 Aug 2003
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x is not equal to 0. Is x+y=0? 1. x is reciprocal of y. 2. x [#permalink]

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03 Dec 2003, 10:13
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x is not equal to 0. Is x+y=0?

1. x is reciprocal of y.
2. x is not equal to 1.

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Director
Joined: 13 Nov 2003
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03 Dec 2003, 11:42
E.

A) x=1/y ..doesn't tell us anything
B) X<>1 hmmm, so what?

A and B, no conclusion.

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Senior Manager
Joined: 05 May 2003
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03 Dec 2003, 13:56
If the option 2 change to x=1 then, will the answer be C.

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Director
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03 Dec 2003, 13:57
dj, Why wouldn't A be sufficient?

Last edited by stoolfi on 03 Dec 2003, 13:58, edited 1 time in total.

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Director
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03 Dec 2003, 13:58
m I getting weird at this
yep A is sufficient...

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Intern
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03 Dec 2003, 14:50
The answer is A.

Can you please explain how did you get the answer.

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Director
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03 Dec 2003, 14:58
a) x=1/y or, y = 1/x
hence, x + 1/x = (x^2+1)/x ...this won't be zero.
b) x=1 .. okiee y=-1 ..result will be zero.
when y<>-1, the result won't be zero . B s not sufficient.

A is the answer

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03 Dec 2003, 14:58
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# x is not equal to 0. Is x+y=0? 1. x is reciprocal of y. 2. x

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