Three balls are selected from a bag contains 5 black, 4 red and 3 blue balls. What is the probability that:                                                                                                   The selected balls are of different colors? All selected balls are of same color? Two balls are of same color? At least one ball of black color?

Question

Three balls are selected from a bag contains 5 black, 4 red and 3 blue balls. What is the probability that:                                                                                                  

  1. The selected balls are of different colors?
  2. All selected balls are of same color?
  3. Two balls are of same color?
  4. At least one ball of black color?

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