2550
50+49+48+47+46+45+43+42+41+40+39+38+37+36+35+34+33+32+31+30+
5个回答
相关问题
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50十49一48一47十46十45一44一43+42+41-40-39+38+37-36-35+34+33-32-31
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怎么用简便的方法计算出50+49-48-47+46+45-44-43+42+41-40-39+38+37-36-35的答
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37+38+39+40+41+42-43-44-45-46-47 -48怎样减算,
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31,37,35,29,35,29,38,40,32,33,38,39,37,38,30,38,36,39,35,36,
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已知数据35,31,33,35,37,39,35,38,40,39,36,34,35,37,36,32,34,35,36
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50-49-48+47+46+45+44+43-42-41-40+39+98怎么简算呀?
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一个样本含有20个数据:35,31,33,35,37,39,35,38,40,39,36,34,35,37,36,32,
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求中位数和众数:37,42,43,43,45,40,36,39,43,42,45,46,44,32,36,39,38,4
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31 37 35 29 38 40 32 35 38 39 35 34 30 36 35 35 36 31这组数的平均数
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40-39+38-37+36-35+34-33+32-31+30-29+28-27+26-25+24-23+22-21