单选题
Raffle tickets numbered consecutively from 101 through 350 are placed in a box. What is the probability that a ticket selected at random will have a number with a hundreds digit of 2?
A
B
C
D
E
【正确答案】
A
【答案解析】
[解析] 从101至350,百位数字是2的数是200至299之间的数,包括200和299,一共有100个;从101至350中共有250个数字,因此彩票百位数字是2的概率为:
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