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A bag contains 5 white, 6 red and 7 black balls, 4 balls are drawn at random. Find the probability that at least 3 balls are black balls.

  • a)

  • b)

  • c)

  • d)

Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A bag contains 5 white, 6 red and 7 black balls, 4 balls are drawn at ...
Atleast 3 are black balls = 3 black balls + 4 black balls



so    P = 
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A bag contains 5 white, 6 red and 7 black balls, 4 balls are drawn at random. Find the probability that at least 3 balls are black balls.a)b)c)d)Correct answer is option 'B'. Can you explain this answer?
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