Talk:2012 AMC 10A Problems/Problem 20: Difference between revisions

Revision as of 15:08, 10 February 2012 view source Bobcroucher (talk \| contribs) 3 edits Created page with "I get <math>\frac{49}{256}</math> for this problem. I used your same logic, but noted that the center square can start out white or black, giving us: <math>\frac{2\times7\times7..."		Latest revision as of 15:32, 12 February 2012 view source Bobcroucher (talk \| contribs) 3 edits Blanked the page
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	~~I get <math>\frac{49}{256}</math> for this problem. I used your same logic, but noted that the center square can start out white or black, giving us: <math>\frac{2\times7\times7}{2^9}</math>.~~

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