9/10+99/100+999/1000+9999/10000+99999/100000
=0.9+0.99+0.999+0.9999+0.99999
=(1-0.1)+(1-0.01)+(1-0.001)+(1-0.0001)+(1-0.00001)
=5-(0.1+0.01+0.001+0.0001+0.00001)
=5-0.11111
=4.88889
“yzwb我爱我家”很高兴与您共同探讨该问题.
9/10+99/100+999/1000+9999/10000+99999/100000
=0.9+0.99+0.999+0.9999+0.99999
=(1-0.1)+(1-0.01)+(1-0.001)+(1-0.0001)+(1-0.00001)
=5-(0.1+0.01+0.001+0.0001+0.00001)
=5-0.11111
=4.88889
“yzwb我爱我家”很高兴与您共同探讨该问题.