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Proof without Words: 13 + 23 + 33 + 43 + · + n3 = {n(n + 1)}2/4

Antonella Cupillari
Mathematics Magazine
Vol. 62, No. 4 (Oct., 1989), p. 259
DOI: 10.2307/2689765
Stable URL: http://www.jstor.org/stable/2689765
Page Count: 1
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