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[Sentence Correction]
试题详情
题目：
The Senate approved immigration legislation that would grant permanent residency to millions of aliens currently residing here and if employers hired illegal aliens they would be penalized.
选项:
A、if employers hired illegal aliens they would be penalizedhiring illegal aliens would be a penalty for employers
B、penalize employers who hire illegal aliens
C、penalizing employers hiring illegal aliens
D、employers to be penalized for hiring illegal aliens
答案:
C
提问：
if a certain coin is flipped,the probability that the coin will land heads is 1/2. If the coin is flipped 5 times, what is the probability that it will land up on the first 3 flips and not on the last 2 flips?
3/5
1/2
1/5
1/8
1/32
这道题是题库中的题，答案是1/32，但是我做的是5/16，思路是：可以出现一次两次三次正面且都出现在前三次,在前三次中选择出现一次的概率，出现两次的概率，出现三次的概率，相加3/32+3/32+1/32=5/16.
望老师解答，马上就要考试了，谢谢！
解答：
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提问：
if a certain coin is flipped,the probability that the coin will land heads is 1/2. If the coin is flipped 5 times, what is the probability that it will land up on the first 3 flips and not on the last 2 flips?
3/5
1/2
1/5
1/8
1/32
这道题是题库中的题，答案是1/32，但是我做的是5/16，思路是：可以出现一次两次三次正面且都出现在前三次,在前三次中选择出现一次的概率，出现两次的概率，出现三次的概率，相加3/32+3/32+1/32=5/16.
望老师解答，马上就要考试了，谢谢！
解答：
点赞0
阅读1108
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