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There are 2 Red, 3 Blue and 5 Black balls in a bag. A ball is drawn from the bag without looking in to the bag. What is the probability of getting a non-blue ball?
  • a)
    7/10
  • b)
    3/5
  • c)
    2/5
  • d)
    None of these
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
There are 2 Red, 3 Blue and 5 Black balls in a bag. A ball is drawn fr...
a) 7/10
Total balls = 2 (Red) + 3 (Blue) + 5 (Black) = 10
Non-blue balls = Red + Black = 2 + 5 = 7
Probability of non-blue = favorable / total = 7/10.
(Complement check: 1 − P(Blue) = 1 − 3/10 = 7/10
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