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Albert and Bernard each have been given correct data.

Albert was given the month but, as there are multiple possibilities within each month, he can not determine the date.

Bernard was given the day. Possible days are: 14, 15, 16, 17, 18, and 19. Except for 18 and 19 there are multiple occurrances of each day.

Albert announces that he knows that Bernard can not know the date. This tells Bernard that the day is not unique. Therefore May 19 and June 18 can be ruled out.

There is now only one month with a single possible day: June. Therefore June 17

44 posted on 04/16/2015 9:55:49 AM PDT by Ray76 (Obama says, "Unlike my mum, Ruth has all the documents needed to prove who Mark's father was.")

I like your logic (I think), but I keep arriving at July 16.

72 posted on 04/16/2015 10:22:41 AM PDT by RoosterRedux (WSC: The truth is incontrovertible; malice may attack it, ignorance may deride it, but in the end...)

At last! I would have pondered this silly question for hours ...

135 posted on 04/17/2015 9:05:45 AM PDT by MHGinTN (Is it really all relative, Mister Einstein?)

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