Inyoursockdrawer.Youhave5pirsofbluesocks.4pairofbrownsocksand6pairsofblacksocks.Incompletedarkness,howmanysockswouldyouneedtopullouttogetamatchingpairofthesamecolor?
这是一个逻辑推理~
知道答案的可以加Q441069449
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