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(2008•大兴安岭)已知5个正数a1,a2,a3,a4,a5的平均数是a,且a1>a2>...
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(2008•大兴安岭)已知5个正数a
1,a
2,a
3,a
4,a
5的平均数是a,且a
1>a
2>a
3>a
4>a
5,则数据:a
1,a
2,a
3,0,a
4,a
5的平均数和中位数是( )
A.a,a
3B.a,
C.
a,
D.
,
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