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michaelmontoya68
20.09.2021 •
Mathematics
An urn contains 10 red marbles, 7 white marbles, and 10 blue marbles marbles. A child randomly selects three (without replacement) from the urn. Round to four decimal places. Find the probability that none of the three marbles are white.
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Ответ:
Given is = x and y vary inversely ; this means when x increases y decreases and when y increases x decreases but the product remains unchanged.
It can be written as =![x=\frac{1}{y}](/tpl/images/0241/3269/62789.png)
Now, the given values are :
x = 2 and y = 7
So, the correct answer is option B.
Hence, option B is correct.