SOLUTION: If 50 (FIFTY) classes of 20 (TWENTY) students are randomly selected, what is the probability that 10 (TEN) classes have no left-handed students?

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Question 998660: If 50 (FIFTY) classes of 20 (TWENTY) students are randomly selected, what is the probability that 10 (TEN) classes have no left-handed students?
Answer by ikleyn(52847) About Me  (Show Source):
You can put this solution on YOUR website!
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Not enough information presented to solve it.

Should I look for the absent information in another sources?

In Wikipedia, for example?