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Five girls -- Fiorenza, Gladys, Helene, Jocelyn, and Kaitlin - and four boys - Abe, Bruce, Clive, and Doug ride to school each day in three separate buses. Abe and Fiorenza always ride together. Gladys and Helen always ride together. Jocelyn and Kaitlin never ride...

Three men go into a motel. The man behind the desk said the room is $30 so each man paid $10 and went to the room. A while later, the man behind the desk realized the room was only $25, so he sent the bellboy to the three guys' room with $5. On the way, the bellboy...

What is the probability of Dead Man's Hand? (Black Aces over Black Eights, the fifth card was unknown.)