Five friends (A, B, C, D, E) stand in a single-file line. E is at the front. C is immediately behind D. B is immediately behind C. A is somewhere ahead of B. What is the front-to-back order of the line?
E, A, D, C, B
The trio D, C, B forms a fixed block [D-C-B]. Since E is 1st, [D-C-B] must occupy positions 3, 4, 5 so that A can fit in position 2 (ahead of B). Thus, the order from 1st to 5th is E, A, D, C, B.
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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