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1991 AJHSME Problems/Problem 25: Revision history

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15 August 2009

  • curprev 18:5318:53, 15 August 2009 5849206328x talk contribs 1,921 bytes +1,921 Created page with '==Problem== An equilateral triangle is originally painted black. Each time the triangle is changed, the middle fourth of each black triangle turns white. After five changes, w…'
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