A larger rotation — Direction Sense Aptitude Question
A larger rotation: If south-east becomes north and north-east becomes west, what does west become? Answer and worked solution on CodeKairo.
- Topic: Direction Sense
- Section: Logical Reasoning
- Difficulty: Hard
- Time target: 120 seconds
Question
If south-east becomes north and north-east becomes west, what does west become?
Options
- North-east
- North-west
- South-east
- South-west
Show the answer and the worked solution
Correct answer: C. South-east
Worked solution
- South-east is 135° and north is 0°, so the mapping subtracts 135°.
- Check on the second pair: north-east (45°) − 135° = −90°, which is 270° — that is west. ✓
- West (270°) − 135° = 135°, which is south-east.
Answer: South-east.
The idea
Assign compass bearings in degrees and treat the mapping as a fixed rotation. Verifying on the second given pair guards against getting the direction of rotation wrong.
Shortcut. NE → W is a 135° anticlockwise turn; three 45° steps anticlockwise from west run SW, S, SE.
Common trap. "North-east" — applying the 135° turn clockwise instead: 270° + 135° = 405° = 45°, north-east.