A bag contains 5 black and 6 white balls; one balls are drawn at random. What is the probability that the balls drawn are black?
1. 6/11
2. 5/6
3. 5/11
4. 2/5
1. 6/11
2. 5/6
3. 5/11
4. 2/5
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Correct Answer – Option 3 : 5/11
Given
Number of black balls = 5
Number of white balls = 6
Formula
Probability = Favorable events/Total possible events
Calculation
Favorable event = Number of black balls = 5
Total possible events = Total number of all balls = 6 + 5 = 11
∴ Probability = 5/11