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A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:
  • a)
    2/91
  • b)
    1/22
  • c)
    3/22
  • d)
    2/77
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn ...
Let S be the sample space. Then, n(S)= number of ways of drawing 3 balls out of 
Let E= event of getting all the 3 red balls. 
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