(1)1+1/2+1/3+1/4+1/5+1/6+1/7+1/14+1/28

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(1)1+1/2+1/3+1/4+1/5+1/6+1/7+1/14+1/28
x){NCmC}# 6b 6b3 6bCMR>) lH6P "b$4Fz6yv =

(1)1+1/2+1/3+1/4+1/5+1/6+1/7+1/14+1/28
(1)1+1/2+1/3+1/4+1/5+1/6+1/7+1/14+1/28

(1)1+1/2+1/3+1/4+1/5+1/6+1/7+1/14+1/28
1+(1/2+1/3+1/6)+(1/4+1/7+1/14+1/28)+1/5=2.7