(1+1/2)(1-1/2)(1+1/3)(1-1/3)...(1+1/99)(1-1/99)值是多A.1/2 B.5/49 C.1 D.50/99

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(1+1/2)(1-1/2)(1+1/3)(1-1/3)...(1+1/99)(1-1/99)值是多A.1/2 B.5/49 C.1 D.50/99
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(1+1/2)(1-1/2)(1+1/3)(1-1/3)...(1+1/99)(1-1/99)值是多A.1/2 B.5/49 C.1 D.50/99
(1+1/2)(1-1/2)(1+1/3)(1-1/3)...(1+1/99)(1-1/99)值是多
A.1/2 B.5/49 C.1 D.50/99

(1+1/2)(1-1/2)(1+1/3)(1-1/3)...(1+1/99)(1-1/99)值是多A.1/2 B.5/49 C.1 D.50/99
(1+1/2)(1-1/2)(1+1/3)(1-1/3)...(1+1/99)(1-1/99)=3/2*4/3*5/4*……*100/99*1/2*2/3*……*98/99=100/2*1/99=50/99选D
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