177. what percent is the average mean of the sum?
(1) 8 numbers (2) the sum is a XXX (number)
我不明白这道题哦,A怎么能充分呢?
如果题目是问"平均数是总数的百分之几"的话,那么可以这么想:
sum/8=mean,
so,mean/sum=1/8=12。5%
对吧?
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