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Mathematics, 25.09.2019 22:40 mateotrevino1

In how many ways can 2 singers be selected from 4 who came to an audition?
a. 6
b. 2
c. 12
d. 4
in a batch of 280 water purifiers, 12 were found to be defective. what is the probability that a water purifier chosen at random will be defective? write the probability as a percent. round to the nearest tenth of a percent if necessary.
a. 4.3%
b. 5.6%
c. 95.7%
d. 71.8%

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In how many ways can 2 singers be selected from 4 who came to an audition?
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