What is the probability that a black ball will be pulled out of the basket in which there are 12 red balls and 8 black balls?
| January 14, 2021 | education
There are n = 12 + 8 = 20 balls in the box.
The number of outcomes favorable for the occurrence of event A such that a black ball is drawn m = 8.
According to the classical definition of probability, the probability of event A will be:
P (A) = m / n = 8/20 = 2/5 = 0.4.
Answer: The probability that the black ball will be pulled is 0.4.
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