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10/16/2007

May 18–May 24, 2010

Problem

The real numbers x₁, x₂, ..., x_n satisfy

Show that the product of some pair of those numbers is less than or equal to -1/n.

Solution

List of solvers

Peiyush Jain, Crispin Pereira, Congpa You, Jonathan Shi, Lloyd Sakazaki.

Peiyush Jain wins the prize!