>>This one was in a work of fiction I am reading. In this part of the book the therapists of a brain trauma victim are trying to guage how far back his cognitive skills have bounced.
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>>You meet a girl, the puzzle goes. She tells you she has a sister with the same mother and father and the same birthday, including the year. But she says they aren't twins. What's the deal?
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>>If you have heard this one before, please don't blurt it out right away. Control yourselves, folks <g>. For those who haven't heard it I think it's a nice puzzler. I sure didn't get it right away. I thought it was a trick question, which it isn't.
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>One was conceived the "natural" way, while the other was in-vitro fertilization?
Nope.
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