(1+2/1)×(1-2/1)×(1+3/1)×(1-3/1)×……×(1-99/1)×(1+100/1)×﹙1+100/1﹚

(1+2/1)×(1-2/1)×(1+3/1)×(1-3/1)×……×(1-99/1)×(1+100/1)×﹙1+100/1﹚
(1+2/1)×(1-2/1)×(1+3/1)×(1-3/1)×……×(1-99/1)×(1+100/1)×﹙1+100/1﹚

(1+2/1)×(1-2/1)×(1+3/1)×(1-3/1)×……×(1-99/1)×(1+100/1)×﹙1+100/1﹚
(1+2分之1)*（1-2f分之1）*（1+3分之1）*（1-3分之1）……（1+100分之1）*（1-100分之1）
=(1-1/2)(1+1/2)(1-1/3)(1+1/3)……(1-1/100)(1+1/100)
=(1/2)(3/2)(2/3)(4/3)(3/4)(5/4)……(99/100)(101/100)
=(1/2)(101/100)
=101/200
200分之101