(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/100)=====

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(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/100)=====(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/100)=====(1-1/2)*(1-1/3)*(1

(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/100)=====
(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/100)
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(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/100)=====
=1/2×2/3×3/4×4/5×...×98/99×99/100
相邻两个分数的分子和分母正好约掉
最后分子剩1,分母还剩100
所以结果为1/100

(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/100)
=(1/2)*(2/3)*(3/4)*...*(99/100)
=1/100

(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/100)
=1/2*2/3*3/4**……*99/100 前一个分数的分母可以和后一个分数的分子约分
=1/100