The answer is so simple!

Calculus Level 1

There are infinite people in a line for a roller-coaster. How long will it take for the very last person in line to get a turn?

Assume that is impossible to cut in line or to ask people to move back in line.

5 miniutes 10 years Never 6 years

Rex Holmes by Rex Holmes , 17, USA

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3 solutions

Steven Chase
Aug 29, 2016

Even if we're not comfortable with infinity and all of its associated paradoxes, there isn't any information from which to infer a particular finite time. Therefore, if we assume that one of the choices is indeed the answer, it must be "Never".

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J D
May 18, 2016

Technically, there is no last person in line because the line is infinitely long

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It's not immediately obvious to me that the time on the rollar coaster couldn't tend to 0, and hence this happens in finite time.

Calvin Lin Staff - 5 years ago

If there are infinite people it can never go down to 0

so the time it takes is never..

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