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We used the multiplication rule to calculate the probability in the previous example.\\  a) What must be true about these kids to make that approach valid?\\  The event must be disjoint. \\  b) Do you think this assumption is reasonable?\\  if the event is disjoint that is to say that the two events arent in common. but if one student goes to school the other should too. this is disjoint is that if one kid goes to school its very possible the other kid went to school too.\\