http://www.sciencedaily.com/releases/2016/01/160127053413.htm(adsbygoogle = window.adsbygoogle || []).push({});

Researchers have solved an apparently overwhelming physics problem involving some truly huge numbers. In summary, the problem asks you to imagine that you have 128 tennis balls, and can arrange them in any way you like. The challenge is to work out how many arrangements are possible and – according to the research – the answer is about 10^250, also known as ten unquadragintilliard: a number so big that it exceeds the total number of particles in the universe.

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# How many ways can you arrange 128 tennis balls

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