SOLUTION: There are three bus lines between X and Y; and five bus lines between Y and Z. Find the number of ways a person can travel Round trip by bus from X to Z by way of Y, if the person
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Question 1088445: There are three bus lines between X and Y; and five bus lines between Y and Z. Find the number of ways a person can travel Round trip by bus from X to Z by way of Y, if the person does not want to use a bus line more than once.
Answer by ikleyn(52777) (Show Source): You can put this solution on YOUR website!
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(3*5)*(4*2) = 15*8 = 120.
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