a + b + c = 48
a + b + c + d = 48 + 14 = 62
mean(a,b,c,d) = 62/4 = 15.5
The mean of a,b and c is 16.if d=14,what is the mean of a,b,c and
The mean of a,b and c is 16.if d=14,what is the mean of a,b,c and
英語人氣：483 ℃時間：2020-02-06 05:33:15
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