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某单位有840名职工,现采用系统抽样方法,抽取42人做问卷调查,将840人按1,...
某单位有840名职工,现采用系统抽样方法,抽取42人做问卷调查,将840人按1,2,…,840随机编号,则抽取的42人中,编号落入区间[481,720]的人数为( )
A.11
B.12
C.13
D.14
考点分析:
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