The box contains 8 black, 4 white and 5 blue balls. One ball is drawn at random. Calculate the probabilities of the following

| July 6, 2021 | education

The box contains 8 black, 4 white and 5 blue balls. One ball is drawn at random. Calculate the probabilities of the following events: a) removed the white ball; b) removed the black ball; c) removed the blue ball; d) removed a non-blue ball; e) removed the black or blue ball.

First, let’s count how many balls we have in total: 8 + 4 + 5 = 17 balls.
In order to find the probability, you need to divide the number of balls of a given color by the total number of balls:
a) The probability that the white ball was removed is 4/17 = 0.2.
b) The probability that the black ball was drawn is 8/17 = 0.47.
c) The probability that the blue ball was removed is 5/17 = 0.29.
d) The probability that the ball was not drawn is (8 + 4) / 17 = 0.7.
e) The probability that a black or blue ball was drawn is (8 + 5) / 17 = 0.76.



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