Tue
Feb
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Tuesday Teaser #27
There is a certain kind of rope which takes exactly one hour to burn from end to end. The rope is not uniform, not symmetric - thicknesses throughout its length vary randomly. No two such ropes will be identical.
- You have only one such rope. How will you measure 30 minutes? [Easy]
- You have two such ropes. How will you measure 45 minutes? [Medium]
- You have only one such rope. How will you measure 15 minutes? [Hard]
