(1)计算1/1*2+1/2*3+1/3+4.+1/99*100 (2)1/1*3+1/3*5+1/5*7.+1/49*51

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(1)计算1/1*2+1/2*3+1/3+4.+1/99*100(2)1/1*3+1/3*5+1/5*7.+1/49*51(1)计算1/1*2+1/2*3+1/3+4.+1/99*100(2)1/1*

(1)计算1/1*2+1/2*3+1/3+4.+1/99*100 (2)1/1*3+1/3*5+1/5*7.+1/49*51
(1)计算1/1*2+1/2*3+1/3+4.+1/99*100 (2)1/1*3+1/3*5+1/5*7.+1/49*51

(1)计算1/1*2+1/2*3+1/3+4.+1/99*100 (2)1/1*3+1/3*5+1/5*7.+1/49*51
(1)99/100,(2)25/51
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