作业帮1/2+1/4+1/8+1/16+1/32+1/64=?
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x)3767b 64 3[{"}
l(2,m biD̴-M M1cf Ҡ_\g )
1/2+1/4+1/8+1/16+1/32+1/64=?
1/2+1/4+1/8+1/16+1/32+1/64=?
1/2+1/4+1/8+1/16+1/32+1/64=?
1/2+1/4+1/8+1/16+1/32+1/64
=1/64(32+16+8+4+2+1)
=1/64*63
=63/64