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World Service,1 min

What’s infinity plus one?

CrowdScience

Available for over a year

Philosopher Eleanor Knox, from King's College London, welcomes you to the five star Hilbert’s Hotel. In a hotel with infinite rooms, all fully booked, how do you accommodate a new guest? And what if an infinite number of new guests turn up in a super-duper-stretch limo? (Image: Hotel corridor Credit: Getty Images.)

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