1又1/2*1又1/3*1又1/4*..*1又1/100咋算
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1又1/2*1又1/3*1又1/4*..*1又1/100咋算
1又1/2*1又1/3*1又1/4*..*1又1/100咋算
1又1/2*1又1/3*1又1/4*..*1又1/100咋算
1又1/2*1又1/3*1又1/4*..*1又1/100
=3/2*4/3*...*101/100
=(3*4*..*100*101)/(2*3*..*100)
=101/2
3/2*4/3*5/4*......101*100=50.5
每个数都换成假分数:
1又1/2*1又1/3*1又1/4*.。。*1又1/100
=(3/2)(4/3)*.。。*(101/100)
=约分=101/2