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In the xy-plane, point (r, s) lies on a circle with center [#permalink]

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01 Aug 2006, 11:58

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

In the xy-plane, point (r, s) lies on a circle with center at the origin. What is the value of r^2 + s^2?

(1) The circle has radius 2.
(2) The point (v2, -v2) lies on the circle.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is
sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

But where did the values sqrt 2 & -sqrt 2 come from? In the original statement no values are given and even option B does not give any value.
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are you saying the question is a misprint..because i saw v in the question and not square root. thanks

Yes. I've seen this question..
S2 was (√2, -√2), not (v2,-v2).. if so, D is the correct answer..

You asked what (v2,-v2) means.
Clearly, it's another variable unless it's a typo..
I believe it's a typo, 'coz there's no such a statement like this one In GMAT..
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