Question

11. A bag contains 6 red and 5 black balls. Find the probability of getting a black ball.
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Answer 1

Total no.of balls= 5+6=11

so the total no.of outcomes =11

No.of black balls =5

so the number of favorable outcomes =5

Therefore, probability = 5/11

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Answer 2

number of Red balls = 6

number of Black balls = 5

probability of getting only Black ball = number of black balls / total number of balls .

$black \: ball \: \: = \frac{5}{11} = 0.454$