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3.D【解析】由题[文]意得组距为0050[章]2=20,因为编号[来]为253的同学被抽[自]到,则编号为253[知]的号码位于第13组[嘛],设第1组中抽取的[答]号码为x,可得x+[案](13一1)X20[网]=253,解9得x[文]=13.令13+([章]n-1)×20=8[来]3,解得n=2,不[自]符合题意:令13+[知](a-1)×20=[嘛]343,解得n-,[答]不符合题意;令13[案]+(m-1)×20[网]=103,解得n=[文]号,不符合题意:令[章]13+(n-1)×[来]20=213,解得[自]n=11,符合题意[知].故选D项
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