Four runners—A, B, C, and D—finished a race. C finished immediately before A. D was not last, but finished after B. Who won the race?
Runner B
C and A must be paired in sequence as [C, A]. D finished after B and is not 4th, so D must be 2nd or 3rd. If D were 3rd, [C, A] wouldn't have two adjacent spots available. Thus, D must be 2nd, placing [C, A] in 3rd and 4th, which leaves Runner B in 1st place.
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: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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