hungtistic
01.08.2019 •
Mathematics
Asample of 4 different calculators is randomly selected from a group containing 1212 that are defective and 3333 that have no defects. find the probability that at least one of the calculators is defective. round to the nearest thousandth.
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Ответ:
There are 33C4 = 40,920 ways to choose 4 calculators that are not defective.
The probability that at least one is defective is (148,995 -40,920)/148,995 ≈ 0.725.
Ответ:
Step-by-step explanation:
There are 20 sixths in 5/12