Difference between revisions of "AoPS Wiki:Problem of the Day/September 5, 2011"

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2(1+1/2+1/4+1/8+1/16+1/32+1/64+1/128+...)=?????

Revision as of 02:31, 5 September 2011

2(1+1/2+1/4+1/8+1/16+1/32+1/64+1/128+...)=?????