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A train has passengers who decrease by half at each of its 5 stops before reaching its final destination, where 2 passengers remain. How many passengers were originally on the train?
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Solution: Step 1: Identify that at the last stop, there are 2 passengers. Step 2: Work backward through the stops, doubling the number of passengers each time. Step 3: At the 4th stop, there were 4 passengers. Step 4: At the 3rd stop, there were 8 passengers. Step 5: At the 2nd stop, there were 16 passengers. Step 6: At the 1st stop, there were 32 passengers. Step 7: Initially, there were 64 passengers.
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