This was asked to me by a friend. $N$ men sit around a circular table. Man 1 has a sword with him and he kills the Man 2, Man 3 picks up this sword and kills the next person i.e. Man 4. Thus the man next to a killed man picks up the sword and kills the one next to him. In the end, which Man will be left behind?
2026-05-04 22:17:55.1777933075
Puzzle of $N$ men around a table
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This is a special case of the Josephus problem.