Guest Book - رياض الحسن - 08/17/2007

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Name:   رياض الحسن
E-Mail:   riyadeh2006
Web Page:   rr
Location:   rr
Birth Year:   rr
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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