Guest Book - Mahmoud - 07/01/2007

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Name:   mahmoud
E-Mail:   mahmoud_mohamed861 at yahoo.com
Birth Year:   19710
Gender:   Male
Fortune:   An algebra teacher is discussing a problem with a student. The teacher says: "Now, suppose x is the speed at which the train is travelling...". And the student says "But teacher, what if x is not the


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