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A sales representative who lives in city A wishes to start from home and visit 4 differentcities: cities B,C,D,andE. She must choose either to drive
A sales representative who lives in city A wishes to start from home and visit 4 differentcities: cities B,C,D,andE. She must choose either to drive her own car, taketrains,or fly. If all cities are interconnected by roads, railways,and airlines, how many travel plans can be constructed to visit each city exactly once and returnhome?
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