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C0-(C1)/2+(C2)/3-.............+(-1)^n(Cn...

`C0-(C1)/2+(C2)/3-.............+(-1)^n(Cn)/(n+1)=1/(n+1)`

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C_0-(C_1)/(2)+(C_2)/(3)-…...+(-1)^n (C_n)/(n+1)=

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