Solution of problem N2859 probability theory
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Product description
- In a group of 30 students in the control work on the "Theory of Probability" 6 students were rated "excellent", 10 - "good", 9 - "satisfactory", the rest - "unsatisfactory." Find the probabilities that: a) all three students called to the blackboard have an “unsatisfactory” grade for the test; b) at least one of the three students called to the board has an “excellent” or “good” rating.
Additional information
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)