Art of Problem Solving
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1997 OIM Problems/Problem 4: Revision history

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23 December 2023

13 December 2023

  • curprev 14:3114:31, 13 December 2023 Tomasdiaz talk contribs 814 bytes +814 Created page with "== Problem == Let <math>n</math> be a positive integer. Let us consider the sum <math>x_1y_1 + x_2y_2 + \cdots + x_ny_n</math>, where the values that the variables <math>x_1,..."