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From a group of 9 biologists and 5 chemists a group of 3 biologists and 2...

From a group of 9 biologists and 5 chemists a group of 3 biologists and 2 chemists is to be formed. In how many ways can this be done if;

  1. Any biologist and any chemist can be included?
  2. One particular chemist must be in the group?
  3. 3 particular biologists cannot be in the group?
Math   Statistics-And-Probability   
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