In a strict digital vault, a security guard checks employee badges using a color sequence. Red always follows Blue. Green never directly follows Red. Yellow must always come immediately before Green. If an employee presents a badge sequence of Blue, Red, Yellow, Green, which rule is violated?
None, the sequence is valid
Let's check every rule step by step. Red follows Blue (Blue then Red: valid). Green does not directly follow Red (Red is followed by Yellow, not Green: valid). Yellow comes immediately before Green (Yellow then Green: valid). Therefore, all conditions are satisfied.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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