anonymous
  • anonymous
At a conference of 250 people, 30% of the participants are French, 35% are Americans, 20% are Germans, and the rest are of the other nationalities. Among any 3 participants, what is the probability that they are not all from other countries? A: 50 B: 75 C: 150 D: 175
Mathematics
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anonymous
  • anonymous
At a conference of 250 people, 30% of the participants are French, 35% are Americans, 20% are Germans, and the rest are of the other nationalities. Among any 3 participants, what is the probability that they are not all from other countries? A: 50 B: 75 C: 150 D: 175
Mathematics
chestercat
  • chestercat
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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welshfella
  • welshfella
30 + 35 + 20 = 85% are form either France, USA or Germany. so 15% are from other countries.
anonymous
  • anonymous
I still don't get it @welshfella
welshfella
  • welshfella
looking at it again II ;m not sure - its been a long time since I did these. Sorry i cant help

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