RE: Math Contest #24 [2 SBI]

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Math Contest #24 [2 SBI]

in puzzle •  5 years ago 

I would say you split 1/(x*(x+3))=1/(3*x)-1/(3*(x+3))=1/3*(1/x-1/(x+3)). Now if you sum over these terms everything cancels out except 1/3*(1/1+1/2+1/3)=11/18

puzzle
5 years ago by

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