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OpenStudy (anonymous):

How many years after the first continental railroad opened did the Wright brothers fly the first airplane? 15 25 35 45

OpenStudy (anonymous):

around 35(:

OpenStudy (anonymous):

I checked it correct @BAMnhra \(\cal\color{#ff4040}{Thank~you}\)

OpenStudy (anonymous):

35 is correct

OpenStudy (anonymous):

thnxs

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