搜搜做题作业网一道简单的英语数学概率题
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一道简单的英语数学概率题
A number is chosen randomly from all of the 2- digit integers,find the probability that the units of the number is 3.
A.1/89
B.4/45
c.1/10
D.9/89
2- digit integers，
A number is chosen randomly from all of the 2- digit integers,find the probability that the units of the number is 3.
A.1/89
B.4/45
c.1/10
D.9/89
2- digit integers，
不是吧.是随机选一个2位数,个位是3的几率是多少?
9/90 = 1/10
9/90 = 1/10