coordinate

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coordinate

by sud21 » Thu Jan 19, 2012 10:13 pm
Does a circle intersect with axis-x?
1) The distance between the center and axis-x is greater than that between center and axis-y
2) The circle intersects with axis-y
Source: — Data Sufficiency |

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by Anurag@Gurome » Thu Jan 19, 2012 10:28 pm
sud21 wrote:Does a circle intersect with axis-x?
1) The distance between the center and axis-x is greater than that between center and axis-y
2) The circle intersects with axis-y
Statement 1 implies that the circle is farther from x-axis than the y-axis, but this does not reflect if the circle intersects with the x-axis; NOT sufficient.

Statement 2 only tells that the circle intersects with y-axis; NOT sufficient.

Combining (1) and (2), again does not reflect if the circle intersects with the x-axis; NOT sufficient.

The correct answer is E.
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by [email protected] » Thu Jan 19, 2012 10:31 pm
Definitely E.
If Statement 1 told us that the x-axis was closer to the center than the y it would be sufficient but it tells us the opposite. The circle could have a huge radius and cross both axises, or a small radius and only cross the y.