Which of the following points lies in quadrant III?

Which of the following points lies in quadrant III?
  1. $(2,-3)$
  2. $(-1,-4)$
  3. $(-2,5)$
  4. $(0,-6)$

Solution

Quadrant III requires both coordinates to be negative. Only $(-1,-4)$ satisfies this.

Asked in: IMO

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