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Revision history of "1959 AHSME Problems/Problem 18"

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  • (cur | prev) 14:12, 20 July 2020‎ Angrybird029 (talk | contribs)‎ . . (732 bytes) (+732)‎ . . (Created page with "== Problem 18== The arithmetic mean (average) of the first <math>n</math> positive integers is: <math>\textbf{(A)}\ \frac{n}{2} \qquad\textbf{(B)}\ \frac{n^2}{2}\qquad\textbf{...")
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