sbelgirl2000
17.10.2021 •
Mathematics
In a shipment of 20 smartphones, 2 are defective. How many ways can a quality control inspector randomly test 4 smartphones, of which 2 are defective?
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Ответ:
The quality control inspector can add 4 randomly selected smartphones from the rest of 20-2 = 18 smartphones.
And 816 ways
Step-by-step explanation:
Ответ:
21250
Step-by-step explanation: I did 2500x8.5=21250