A shepherd has sheep that all escape except for nine. Every single one of those remaining sheep runs away, except for six. Then, all of those remaining sheep vanish into the fog, except for four. How many sheep does the shepherd have left?
Four
The phrasing 'all escape except for nine' means nine stayed. Then 'all of those... except for six' means six stayed. Finally, 'all of those... except for four' means four stayed. Each clause modifies the remaining group from the previous step.
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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