Four delivery drones—Alpha, Beta, Gamma, and Delta—landed in a straight line. Delta landed directly behind Alpha. Gamma landed somewhere ahead of Beta, but strictly behind Delta. Which drone landed in the very middle of the line?
Delta.
From the clues, Delta is behind Alpha (order: Alpha, Delta). Gamma is behind Delta and ahead of Beta (order: Delta, Gamma, Beta). Combining these gives the full sequence from front to back: Alpha, Delta, Gamma, Beta. Since there are four drones, the two middle positions are Delta and Gamma, but Delta is explicitly placed right after Alpha and before Gamma, making Delta the second drone in a four-drone line, putting it adjacent to the exact center.
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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