Logical Reasoning
hardQ. No. 19808
From O, a robot moves 10 m South, 10 m West, 10 m North and 4 m East. In which direction is it from O?
Last Updated:
ANorth
BWest
CEast
DSouth
Correct Answer: WestYour Answer: B
Explanation
Step 1: Translate the route into horizontal and vertical components. | Step 2: South and North cancel; net movement is 6 m West. | Step 3: Hence the required result is West. | Answer: Option B — West.
Important Notes
- Draw a north arrow before solving and take East as positive x, West as negative x, North as positive y, and South as negative y. |
- Apply every turn from the person's current facing direction. A right turn changes direction clockwise; a left turn changes it anticlockwise. |
- Combine opposite movements before calculating distance: cancel East with West and North with South. |
- Decide the final direction from the signs of the remaining horizontal and vertical displacements. For example, positive x and negative y indicate South-East. |