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Logic riddle

Two sisters were born at the exact same hour on the exact same day of the exact same year to the same biological parents, yet they are not twins. How can this be?

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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