The urn contains 5 balls: 1 white, 2 red, 2 black. Draw 2 balls at random. What is the probability
| August 17, 2021 | education
The urn contains 5 balls: 1 white, 2 red, 2 black. Draw 2 balls at random. What is the probability that the balls drawn will be the same color?
When we take out the first ball, it is important that it is not white. Probability 4/5 = 80% = 0.8.
If this condition is met, then the second ball will be of the same color in 1 case out of 4 = 25% = 0.25.
The final probability of drawing 2 balls of the same color = 0.8 * 0.25 = 0.2 = 20%.
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