1⼀2+1⼀4+1⼀6+1⼀8+1⼀10........1⼀2048=? 1⼀2+1⼀4+1⼀8+1⼀16+1⼀32.......1⼀2048=?急

2025-02-24 21:31:33
推荐回答(2个)
回答1:

1/2+1/4+1/8+1/16+1/32.......1/2048=?
根据等比数列,=1-(1/2)^10]/(1-1/2)=1-1/2048=2047/2048

回答2:

1/2+1/4+1/8+1/16+1/32.......1/2048
=1-1/2048
=2047/2048