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OG2019数学问题 求大神讲解过程
GMAT数学
OG2019数学问题 求大神讲解过程
If S=1+1/2平方+1/3平方+1/4平方+……+1/10平方,which is true? A.S大于3 B.S=3 C.S大于2 D.S=2 E.S小于2
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