TamB01
09.10.2020 •
Mathematics
A bag contains 20 balls of which x are black, 2x are white and 8 are red.
A ball is selected at random from the bag.
What is the probability that it is not black? Give your answer as a decimal.
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Ответ:
15 % of 45 is:
45 * 15 / 100 = 6.75
so 45+ 6.75 = 51.75