A lottery game has balls numbered through 19. What is the probability of selecting an even numbered ball or a 4 ?
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To find the probability of selecting an even numbered ball or a 4 in the lottery game, you first need to determine the total number of favorable outcomes and the total number of possible outcomes.
There are 10 even numbered balls (2, 4, 6, 8, 10, 12, 14, 16, 18) and one ball with the number 4. So, there are 10 + 1 = 11 favorable outcomes.
The total number of possible outcomes is the total number of balls, which is 19.
Therefore, the probability of selecting an even numbered ball or a 4 is given by the ratio of favorable outcomes to the total number of possible outcomes:
Probability = (Number of favorable outcomes) / (Number of possible outcomes)
Probability = 11 / 19 ≈ 0.579
So, the probability of selecting an even numbered ball or a 4 in the lottery game is approximately 0.579 or 57.9%.