GWD数学题

Xiaotongdi · 发表于 2011-4-4 23:22:10

There are 8 magazines lying on a table; 4 are fashion magazines and the other 4 are sports magazines.If 3 magazines are to be selected at random from the 8 magazines, what is the probability that at least one of the fashion magazines will be selected?

A.1/2
B.2/3
C.32/35
D.11/12
E.13/14

甜你一口 · 发表于 2011-4-4 23:34:28

1-[c(3,4)/c(3,8)]=1-(4/56)=1-(1/14)=13/14

GWD数学题

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