1+1/2+1/4+1/8+1/16+1/32.+1/256 ?
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HY#SS~qAbA 5
1+1/2+1/4+1/8+1/16+1/32.+1/256 ?
1+1/2+1/4+1/8+1/16+1/32.+1/256 ?
1+1/2+1/4+1/8+1/16+1/32.+1/256 ?
1+1/2+1/4+1/8+1/16+1/32.+1/256
=1+1-1/2+1/2-1/4+1/4-1/8…………-1/256
=1又255/256