1⼀8+1⼀16+1⼀32+……1⼀512

2025-03-05 11:05:55
推荐回答(4个)
回答1:

1/8+1/16+1/32+……1/512
=(1\4-1\8)+(1\8-1\16)......(1\256-1\512)
=1\4-1\8+1\8-1\16.....1\256-1\512
=1\4-1\512
=127/512

回答2:

把分母全部化成512,然后就好算了

回答3:

1/8+1/16+1/32+……1/512
=(1/8+1/16+1/32+……1/512+1/512)-1/512
=1/4-1/512
=127/512

回答4:

255/256