问题
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2,3,8,27,32,(),128A.64 B.243 C.275 D.48
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2,3,8,27,32,(),128 A.64 B.243 C.275 D.48
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2,8,32,______,512 A.64 B.128 C.216 D.256
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2,3,8,27,32,(),128A.64 B.243 C.275 D.48
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2,8,32,(),512A.64 B.128 C.21D. 256
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计算1/4+3/8+7/16+15/32+31/64+63/128+127/256+255/512+511/1024=? A.3×(513/1024)B