A professor has learned that three students in his class of 20 will cheat on the final exam. He decides to focus his attention o n four randomly chosen students during the exam. What is the probability that he finds at least one of the students cheating
1 answer:
Answer:
6%
Step-by-step explanation:
3/20=4/x
It is a indirect proportion so we reciprocal,
Then,
3/20=x/40
3×40=20×x
120=20x
x=120/20
x=6
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