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January 30, 2015

January 30, 2015

Posted by **Annabella Richards** on Monday, June 20, 2011 at 2:11am.

- Math -
**drwls**, Monday, June 20, 2011 at 2:33amLet the middle number be x.

(x-1)x(x+1) = x^3 - x = 4080

x = 16 works

I did not solve the cubic equation, but knew the answer had to be an integer slightly larger than the cube root of 4080.

The numbers are 15, 16 and 17.

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