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1/2+1/4+1/8+1/16+……+1/1024+1/2048=?
人气:464 ℃ 时间:2020-03-28 17:58:52
解答
1/2+1/4=3/4
1/2+1/4+1/8=7/8
1/2+1/4+1/8+1/16=15/16
.
1/2+1/4+1/8+1/16+……+1/1024+1/2048=2047/2048
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