Mathematics, 26.10.2020 17:20 janeriaw188
A student committee of 4 is formed by randomly drawing people (without replacement) from a collection of 4 sophomores, 4 juniors and 3 seniors. What is the probability the committee thus formed will have at least one representative from all three groups of students?
Answers: 2
![=\dfrac{11!}{(11-4)!}\ \ \ \ [^nP_r=\dfrac{n!}{(n-r)!}]](/tpl/images/0840/4425/84ca6.png)
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A student committee of 4 is formed by randomly drawing people (without replacement) from a collectio...
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