- A132
- B72
- C144
- D24
Step-by-Step Solution
Onward: . Return must use a different train (3 left) and a different bus (2 left): . Total . (144 allows reuse.)
Answer: B) 72
Town X to town Y has 3 bus routes and Y to Z has 4 train routes. In how many ways can a person go X → Z → X if no bus or train route is used twice?
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